[RuntimeAsync] Native AOT support

[agocke]

Tracking issue for Native AOT support for runtime-async.

• MacOS arm64 NAOT runtime-async - bad ResumeInfo written (causing failure on StackTraceTests) #124015 (MacOS arm64 NAOT runtime-async – bad ResumeInfo)
• Arm32 nativeAOT runtime-async Exception.ToString() test failure #123979 (Arm32 nativeAOT runtime-async Exception.ToString() test failure)
• Hijacking changes for runtime async #122492
• Unboxing+instantiating thunks #121781
• Stack traces with async variants #122547

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[MihuBot]

I'm a bot. Here is a possible related and/or duplicate issue (I may be wrong):

• [RuntimeAsync] R2R support #115098

[MichalStrehovsky]

We have one remaining bug. It is properly labeled and milestoned, I don't think we need this uberissue anymore.