Draft: audiotrack: add AAC passthrough support for Android

This merge request aims to add support for AAC (Advanced Audio Codec) transmission through S/PDIF and Bluetooth on Android devices. The implementation ensures seamless integration with existing audio output modules, allowing high-quality audio streaming via these interfaces.
Key Features:

AAC over Bluetooth:
    Adds support for Bluetooth transmission of AAC-encoded audio.
    Compatible with Android Bluetooth audio profiles (A2DP).

Changes:

Updated audio output modules to support AAC encoding for S/PDIF and Bluetooth.
Modified audiotrack.c and related modules for proper AAC handling.

Testing:

Tested on Android devices with Bluetooth audio outputs, HDMI passthrough is yet to be tested.
Verified compatibility with various Bluetooth-enabled speakers and receivers supporting AAC codec.

Known Issues:

AAC playback often fallsback to using the a2dp_aac_encoder or doesn't output satisfactory playback when using the jfields.AudioFormat.ENCODING_AAC_LC.