feat: add app.runningUnderRosettaTranslation to detect running under rosetta

[MarshallOfSound]

As in title and notes, simple API, code is straight from apples docs.

Docs reference for rosetta detection: https://developer.apple.com/documentation/apple_silicon/about_the_rosetta_translation_environment?language=objc#3616845

Notes: Added new app.runningUnderRosettaTranslation property to detect when running under rosetta on Apple silicon

[ckerr]

I'm not able to come up with a 2nd use case so maybe this is moot -- but runningUnderRosettaTranslation() is such a single-purpose call API that I wonder if something like String? emulatorEnvironment() that returns rosetta here would be more reusable for some currently-unknown future use.

👍 on including this, whatever its final form, in 11

[MarshallOfSound]

I'm not able to come up with a 2nd use case so maybe this is moot -- but runningUnderRosettaTranslation() is such a single-purpose call API that I wonder if something like String? emulatorEnvironment() that returns rosetta here would be more reusable for some currently-unknown future use.

Without building this is a super expansible way I don't think we can cover all the possible emulation scenarios. i.e. technically you could be under multiple layers of emulation (Rosetta --> Qemu for instance is how docker is going to work). Given the very targeted and current use case for this I don't think making it partially generic gives us too much for the future. Emulation is done differently on different platforms and each has it's own implications, i.e. I can see people being interested in a process.arch vs process.archMyProcessIsBeingTreatedAs but that isn't important for this rosetta use case where we just need to know if rosetta is in play. Even if rosetta isn't actually doing anything 🤷

[nornagon]

api lgtm, but let's reuse chrome's impl.

further changes post-approval

[release-clerk]

Release Notes Persisted

Added new app.runningUnderRosettaTranslation property to detect when running under rosetta on Apple silicon

[trop]

I have automatically backported this PR to "11-x-y", please check out #26492