microphone scopes

[Cabbache]

It would be nice to be able to select other sources of audio such as .wav files instead of giving the microphone permission.

I've opened some PRs that implement this, but it's not tested thoroughly.

• add MicrophoneScopeInfo AIDL and binder query platform_frameworks_native#36
• add microphone scopes support platform_frameworks_base#310
• microphone scopes platform_packages_apps_Settings#409
• add microphone scopes UI in PermissionController platform_packages_modules_Permission#85
• add SELinux policy for microphone scopes platform_system_sepolicy#76

since https://github.com/GrapheneOS-Archive/platform_frameworks_av is archived, I can't open a PR there so I've pushed my https://android.googlesource.com/platform/frameworks/av branch to https://github.com/Cabbache/platform_frameworks_av