Camera: Various Camera2 extension updates

Update Camera2 extensions to:
 - Query advanced API support
 - Be able to query latency ranges when using
   legacy extensions
 - Trigger the camera extension initializer
   for both the legacy and advanced cases

Bug: 188579227
Test: Camera CTS

Change-Id: I8db505d0c649f6c664f60c1c1e3cd17de54abe3a