Convert three media binaries to Android.bp

This converts mediaserver, mediametrics and screenrecord and the
libraries they depend on to Android.bp

See build/soong/README.md for more information.

Bug: 122331945
Bug: 80410283
Test: boot blueline
Test: youtube
Test: screenrecord
Change-Id: I132b8b4f7965449df68fb1544034a7241c594a63