Added tvos-sim support

[ErikEverson]

This PR allows using cc-rs lib to target tier 3 *-apple builds simulator builds

• The aarch64-apple-tvos-sim target was added so both tvos-sim and x86 versions are simulator versions.
• I removed the target.contains("aarch64-apple-tvos") as it seems to be redundant and iOS and watchOS implementations do not include it. The build was not effected with this removal.
• Added a new check-tvos-sim step to actions

how was this tested:

• cargo test -Z build-std=std --no-run --workspace --target aarch64-apple-tvos{and -sim}
• cargo test -Z build-std=std --no-run --workspace --target aarch64-apple-tvos{and -sim} --release
• cargo test -Z build-std=std --no-run --workspace --target aarch64-apple-tvos{and -sim} --features parallel

[ErikEverson]

CC: @phatblat for eventual visionOS support additions

[BlackHoleFox]

This change seems to misalign with XCode at least. When building Objective-C with clang via XCode it passes the -target flag to convey the deployment target: -target arm64-apple-tvos16.0 instead of the os-version-min flag we pass (which doesn't seem documented for tvOS/watchOS? ignoring that though...)

Did you try building any libs with this just to make sure? I didn't see a problem getting the deployment target into the final Mach-o executable at least.

[ErikEverson]

That is a good point. I will add back this code as everything worked fine either way and that will align it with XCode's behavior.
As for libraries that I built this on there are two. Blake3 and Ring. Both are dependencies of the project I am working on Ditto which is included in my iPad/tvOS application/s.

the produced binary Mach-O Platform type was verified with otool.

[Be-ing]

Could you create a new matrix to combine this with the aarch64-apple-tvos test above?

[ErikEverson]

@Be-ing I updated to have a matrix for all -Z build-std targets. The only ones right now are tvOS targets but any tier 3 targets would fall in this same bucket as well.

[NobodyXu]

Thank you!