audio: add call audio redirection APIs

Add AudioManager system APIs to acquire call audio injection AudioTrack
and extraction AudioRecord.

Add AudioTrack and AudioRecord Builder system APIs to create different
variants of call redirection AudioTrack and AudioRecord:
- If the call is PSTN, only the AudioTrack or AudioRecord is created
with audio usage or capture preset corresponding to call audio uplink
injection or downlink capture.
- If the call is VoIP, a dynamic audio policy is installed for voice
communication interception and the AudioTrack or AudioRecord is obtained
from the audio policy.

Bug: 189472651
Test: make
Change-Id: I6d3ed3948c13253ceea4a0fab836a753b5ee9ad0