Enable automatic adoption of new default audio devices upon detection.
1. add `AggregateDeviceManager` to watch for audio device changes, creating & maintaining `AggregateDevice` instances and cleaning up
2. use a workaround of `FastFixedIn` to deal with resampling delay issue (this is low quality and have some artifacts in the resampled audio)
fix AF-2536
AudioMedia entity for loading & controlling a single audio media
AudioMediaManagerService: Global audio state synchronization across tabs
AudioAttachmentService + AudioAttachmentBlock for manipulating AttachmentBlock in affine - e.g., filling transcription (using mock endpoint for now)
Added AudioBlock + AudioPlayer for rendering audio block in affine (new transcription block whose renderer is provided in affine)
fix AF-2292
fix AF-2337
A listening tappable app's info should inherit from its group process's name/icon. However the group process may not be listed as a tappable application.
