Handle Model Loading/Unloading Broadcasts for Samsung in Isolated AICore

This change registers a callback with the remote service via
updateProcessingState to receive model loading/unloading updates and
then send these as broadcasts to system process.

Bug: 339688752
Test: cts in topic
Change-Id: I84ae64c5f5dfcbc7005a912b31861b3b64bf61f1
5 files changed