Add Hearing Devices tile status

* Active state when hearing device is currently active.
* Inactive state when hearing device have been paired before.

Bug: 338520195
Test: atest HearingDevicesDialogManagerTest HearingDevicesTileTest HearingDevicesCheckerTest
Flag: EXEMPT bugfix
Change-Id: Iba6d1d252afa710474fc7152861c8ff0b39fa168
6 files changed