Create toolchain meta components#45

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fcremo wants to merge 3 commits intorevng:masterfrom

fcremo:feature/toolchain-meta-component

Commits on Aug 17, 2021

Create toolchain/$arch/cxx-toolchain components
Filippo Cremonese
committed
Update and reformat documentation
Filippo Cremonese
committed
Log revng-orchestra install URL
Filippo Cremonese
committed