Implement audio switch UI

* Implement available media devices group
* Add AvailableMediaDeviceGroupController to realize UI, the user can see the all device that can be activated in this group.
* ConnectedDeviceGroupController change to show the device that cannot be activated but is connected.
* Refactoring the below class, implement the controller in connected_devices.xml.
  ConnectedDeviceGroupController.java
  SavedDeviceGroupController.java
  ConnectedDeviceDashboardFragment.java
  connected_devices.xml
* Add AvailableMediaBluetoothDeviceUpdaterTest to verify the add/remove preference behavior when connectedStateChanged or profileAudioStateChanged
* Add test that used to verify device is connected or not in BluetoothDeviceUpdaterTest.
* Add test that used to verify the add/remove preference behavior when connectedStateChanged or profileAudioStateChanged in ConnectedBluetoothDeviceUpdaterTest.
* Add AvailableMediaDeviceGroupControllerTest to verify bluetooth feature is supported or not and test register callback.
* Add test that used to verify bluetooth feature is supported or not and test register callback in ConnectedDeviceGroupControllerTest.
* Add test that used to verify bluetooth feature is supported or not and test register callback in SavedDeviceGroupControllerTest

Bug: 74134939
Test: make -j40 RunSettingsRoboTests
Change-Id: I54d03c2ddadc6a4be7519dd74cdbcb5055d44083