Implement Hearing Devices Quick Settings Tile (1/n)

Hearing Devices qs tile provides a quick access dialog to interact with hearing devices
This patch provides
* Basic qs setup
* Long click to hearing devices page
* Use FLAG hearing_aids_qs_tile_dialog to control available status

Bug: 291423171
Bug: 319197158
Test: atest HearingDevicesTileTest
Flag: ACONFIG com.android.systemui.hearing_aids_qs_tile_dialog DEVELOPMENT
Change-Id: I8a1d8c3156a6b31a3fe00771c21f22ebe307714b