Refactored metadataretriever_fuzzer

The following are updates to the fuzzer:
1. Randomized order of API calls.
2. Updated Android.bp for extractor service

Test: ./mediarecorder_fuzzer
exec/s: 280
Bug: 313038371

Change-Id: I7b9ebe66a5d30ad9a351c3f461f97eefa60c217d
2 files changed