codec metrics for resource reclaim

Following changes are made in this CL:
- Change IResourceManagerService interfaces with ClientInfo
  that holds pid, uid, name and id.
- Maintain a count of resource and their concurrent instances.
- Construst and post a pushed atom for codec resource reclaim.

Bug: 265488359
Test: atest cts/tests/media/misc/src/android/media/misc/cts/ResourceManagerTest.java
      /data/nativetest64/ResourceManagerService_test/ResourceManagerService_test
      /data/nativetest64/ResourceObserverService_test/ResourceObserverService_test
      refactoring CL. Existing unit tests still pass.
Change-Id: I403fa1bffedb36655f8098aad5d680e8d10ebb71