Add a switcher to enable/disable LE audio feature. The switcher could be
enabled by setprop ro.bluetooth.leaudio_offload.supported=true
screenshot: https://screenshot.googleplex.com/6aGP664S9PX5EMS
Bug: 233018305
Bug: 233005340
Test: make RunSettingsRoboTests ROBOTEST_FILTER=BluetoothLeAudioPreferenceControllerTest
Test: switch LE audio feature, and check LE audio functionality status
Change-Id: I8adcf27edd1438df445d32fca93f35ff5020a3b3
The resources available to tests are now exactly the merged resources
located in the APK under test.
Bug: 74359828
Test: make -j56 RunSettingsRoboTests
Change-Id: I050db81a92decefea23314b5ec7a62f77ff4bb2b
Having consistent import order will reduce chance of merge
conflict between internal and external master
Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b