Implement native GetModuleIndex

[janvorli]

This change replaces managed GetModuleIndex tool by shell scripts using
native tools.

Close #34920

[mikem8361]

Thanks Jan for doing this.

Should the "clr.buildtools" subset be removed now (eng\subsets.props) and the line in eng\pipelines\coreclr\templates\build-job.yml that builds it? And the GetModuleIndex tool source?

I can do that clean if you want.

[mikem8361]

Look good. Thanks Jan for doing this.

[janvorli]

Should the "clr.buildtools" subset be removed now

Ah, I knew I have forgotten something. Thank you for reminding me that. I'll add the cleanup to this PR.

[janvorli]

@mikem8361 I've removed the clr.buildtools stuff, can you please take a look one more time to make sure I've not forgotten anything?

[mikem8361]

Some minor things that shouldn't be needed anymore. They are not that important to remove.

eng/Versions.props line 80: remove <MicrosoftFileFormatsVersion>1.0.120601</MicrosoftFileFormatsVersion>

src/coreclr/CMakeLists.txt line 28: remove CLR_DOTNET_COMMAND cmake property

[janvorli]

src/coreclr/CMakeLists.txt line 28: remove CLR_DOTNET_COMMAND cmake property

I've done that already.
I've pushed one more commit to remove the eng/Versions.props line 80.

[mikem8361]

Thanks Jan. Looks good.