Powershell: add back options for STA

[TravisEz13]

Add command line option to specify apartment state and ability to create runspace with apartment state

[iSazonov]

Related #4995

[bergmeister]

What are the plans here in terms of timeline/expectations as this could be important for WPF? Add STA for PS 7.0? Or is it too much involved and will come only in 7.1? @SteveL-MSFT

[SteveL-MSFT]

@bergmeister agree that this is probably needed for WPF to work with 7, so we should do this for 7.0.

[iSazonov]

We preserved all apartment code. Only .Net Core has probably deviations from .Net Framework.

[bergmeister]

@iSazonov Except for the -Sta and -Mta switches on the pwsh binary that were removed in #4995

[iSazonov]

Has MSFT team tests for the code area?

[SteveL-MSFT]

@iSazonov I searched the old tests and they don't seem comprehensive. All it really does is use -STA with powershell.exe and validates that the apartmentstate is set correctly. Ideally, we should include a specific test like using a COM object that requires STA or even WPF (not getting an exception). Also manually run all tests with -STA to see if anything fails unexpectedly.

[msftbot[bot]]

:tada:This issue was addressed in #10061, which has now been successfully released as v7.0.0-preview.3.:tada:

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