Add suport for additional injected metadata

To support security patch injection, adding support for additional
injection metadata including keyhint, icon_tintable, summary_uri, and
icon_uri.

Bug: 172352420
Test: manual, atest CarSettingsUnitTests, make -j50 RunCarSettingsRoboTests ROBOTEST_FILTER=com.android.car.settings.common
Change-Id: I6a2f55817679ef1f370cd72925392dcdee2a0831
18 files changed
tree: 00e854d2e4bec58d63296a21cc0c2794b255850a
  1. res/
  2. src/
  3. tests/
  4. Android.bp
  5. AndroidManifest.xml
  6. OWNERS
  7. PREUPLOAD.cfg