AssetManager2: Add other support methods

- Add GetResourceConfigurations()
- Add GetResourceLocales()
- Add ResolveReference()
- Add stub for GetResourceId()
- Change LoadedArsc and ApkAssets factory method to return const

Test: make libandroidfw_tests
Change-Id: Ia797dc9381a523b1a3e7029048a413e544730379
21 files changed