Add the python tool to dump le audio data from btsnoop

Usage: ./dump_leaudio.py BTSNOOP.fille [-v]
-v to enable the verbose log

The supported specficiation:
ASCS_1.0
PACS_1.0
BAP_1.0

The format:
Generates a audio dump file where each frame consists of a two-byte frame length information and the coded frame

Bug: 200748923
Bug: 150670922
Test: verify with single & multiple media/ringtone/conversaion btsnoop
Change-Id: I7a973864276a61270051dff07c44e2366335a558