Better mirror `gh workflow run` interface

[mdb]

gh workflow run is similar-ish to gh dispatch workflow, yet its interface is a bit different, namely in...

• its acceptance of --json inputs
• its acceptance of a [workflow-id] workflow YAML file argument
• its support for interactive collection of inputs
• its support for key=value specified inputs

Perhaps gh dispatch workflow should mirror gh workflow run's interface, at least in some areas?