DrmUtils: refactor IDrm/ICrypto creation

Added utilities to:
* Query config for IMediaDrmService usage
* Create remote vs local IDrm/ICrypto object based on aforementioned config

Bug: 134787536
Test: MediaDrmClearkeyTest#testClearKeyPlaybackCenc
Change-Id: I72df528c0bbd8a6dbd3c4962ac91eb89696bcaf7
9 files changed