Merge changes from topic "backport-connectivityresources"

* changes:
  Use module resources in NetworkNotificationManager.
  Cherry-pick some test changes from ag/13210542.
  Add connectivity protos to framework-connectivity
  Remove unused NetworkPolicyManagerInternal in CS
  Move connectivity AIDLs to android.net
  Migrate framework-connectivity internal resources
  Expose isUidNetworkingBlocked and isUidRestrictedOnMeteredNetworks
  Add multipath preference, background status API
tree: 1841ec62ec64c6b974b67fc8908066a082cc0fcc
  1. core/
  2. framework/
  3. service/
  4. services/
  5. tests/
  6. OWNERS