floss: avrcp: organized media information and pass to btif

Parse the topshim passed media information into btif standardized
version, which includes: converting time units into milliseconds,
combining playback status, position, and duration into one struct, and
converting metadata information into AVRCP attributes.

Bug: 240780471
Tag: #floss
Test: ./build.py
BYPASS_LONG_LINES_REASON: Bluetooth likes 120 lines

Change-Id: Idb2309e8f4021f9c77b05291ed527525d6cf5e03