Migrate StripEmbeddedLibraries from ILLink step

[sbomer]

Changes this from an ILLink step to run in AssemblyModifierPipeline.

I'm hitting some failures locally that might have to do with the modiifier pipeline modifying assemblies in-place - opening this to see if it repros in ci.

[jonathanpeppers]

There are .binlog files as test attachments for each test, but a lot of builds get the error:

(_AfterILLinkAdditionalSteps target) -> 
         C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024: System.IO.IOException: The requested operation cannot be performed on a file with a user-mapped section open. : 'C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\obj\Release\android-arm64\R2R\FormsViewGroup.dll'. [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize, Nullable`1 unixCreateMode) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Mono.Cecil.ModuleDefinition.GetFileStream(String fileName, FileMode mode, FileAccess access, FileShare share) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Mono.Cecil.ModuleDefinition.Write(String fileName, WriterParameters parameters) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Mono.Cecil.AssemblyDefinition.Write(String fileName, WriterParameters parameters) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Xamarin.Android.Tasks.SaveChangedAssemblyStep.ProcessAssembly(AssemblyDefinition assembly, StepContext context) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Xamarin.Android.Tasks.AssemblyPipeline.Run(AssemblyDefinition assembly, StepContext context) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Xamarin.Android.Tasks.AssemblyModifierPipeline.RunPipeline(AssemblyPipeline pipeline, ITaskItem source, ITaskItem destination) [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Xamarin.Android.Tasks.AssemblyModifierPipeline.RunTask() [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]
       C:\a\_work\1\s\bin\Release\dotnet\packs\Microsoft.Android.Sdk.Windows\36.1.99-ci.dev-sbomer-stripembedded-step.92\tools\Xamarin.Android.Common.targets(1501,3): error XAAMP7024:    at Microsoft.Android.Build.Tasks.AndroidTask.Execute() [C:\a\_work\1\a\TestRelease\01-14_23.21.02\temp\SmokeTestBuildWithSpecialCharactersTrueFalseCoreCLR\テスト\テスト.csproj]

[sbomer]

And similarly on linux:

/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015: System.NotSupportedException: Writing mixed-mode assemblies is not supported [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Mono.Cecil.ModuleWriter.Write(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Mono.Cecil.ModuleWriter.WriteModule(ModuleDefinition module, Disposable`1 stream, WriterParameters parameters) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Mono.Cecil.ModuleDefinition.Write(String fileName, WriterParameters parameters) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Mono.Cecil.AssemblyDefinition.Write(String fileName, WriterParameters parameters) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Xamarin.Android.Tasks.SaveChangedAssemblyStep.ProcessAssembly(AssemblyDefinition assembly, StepContext context) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Xamarin.Android.Tasks.AssemblyPipeline.Run(AssemblyDefinition assembly, StepContext context) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Xamarin.Android.Tasks.AssemblyModifierPipeline.RunPipeline(AssemblyPipeline pipeline, ITaskItem source, ITaskItem destination) [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Xamarin.Android.Tasks.AssemblyModifierPipeline.RunTask() [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]
/mnt/vss/_work/1/s/bin/Release/dotnet/packs/Microsoft.Android.Sdk.Linux/36.1.99-ci.dev-sbomer-stripembedded-step.92/tools/Xamarin.Android.Common.targets(1501,3): error XAAMP7015:    at Microsoft.Android.Build.Tasks.AndroidTask.Execute() [/mnt/vss/_work/1/a/TestRelease/01-14_23.21.26/temp/CheckAssemblyCountsTrueTrueCoreCLR/UnnamedProject.csproj]