leaudio: Add a way to disable LeAudio profile for given group

For dual mode headset we want to have a way to switch between A2DP/HFP
and LE_AUDIO. For this reason we need a way to disable LE_AUDIO.
It is done by Settings with setConnectionPolicy API and this is
later set down to native code.
When profile is disabled, TA reconnection is also disabled for given
group

Bug: 277557618
Test: atest BluetoothInstrumentationTests
Test: manual, LE toggle switch
Tag: #feature

Change-Id: I4ac830a667f57d591ab8ac8170cc8b841efd3703