Create a new permission to override Overridable change ids

With this change we allow system packages with the new permission to
override ChangeIds specifically annotated as Overridable to set
overrides even on non-debuggable builds.

Bug: 174043039
Bug: 175874108
Test: atest FrameworksServicesTests:CompatConfigTest
Test: atest FrameworksServicesTests:PlatformCompatTest
Change-Id: Ib8d5d83b5fd62acb5808d10f5c413616f29ee65c
Merged-In: Ib8d5d83b5fd62acb5808d10f5c413616f29ee65c