[P23] Enable LE Audio broadcast offload

1. Set the LE Audio broadcast switcher property
2. Enable LE Audio broadcast profile
3. Add support for BLE Broadcast output in audio policy file
4. Add broadcast offload capability

Test: Manual
Tag: #feature
Bug: 268170293
Change-Id: I423d08442a99cf73535f5664f81c722c62b60996
7 files changed