Feature suggestion: allow for use of GrapheneOS's "sandboxed google play services" as an option

[AlexandraKey]

As an alternative to MicroG, maybe it would be possible to implement the "compatibility layer" that allows using Graphene's compartmentalized google services?

I am a humble hobbyist so I don't have the chops to do it and submit a PR but apparently ProtonAOSP has it and it is supported both on Android 11 and Android 12 with them...
...so maybe someone could kindly backport it from ProtonAOSP both to android 11 and android 12 branches?