Base patch structure for AOSP Android 16 build:
- signature-spoofing: patch PackageManager to allow FAKE_PACKAGE_SIGNATURE
permission for microG; use signature|privileged protection level and add
lint-baseline entries for the UnflaggedApi annotation
- iconloaderlib: remove forceMonochromeAppIconsAdaptColors flag absent in
this AOSP revision (was causing build breakage)