Nearby Presence scanning sessions may be very long. We need a way to notify the scanner that new credentials were added during scanning.
`SubscribeForPublicCredentials()` allows us to subscribe for such updates.
PiperOrigin-RevId: 502699345
1. Update the API to accept the credentials on input instead of credential manager.
2. Update the test with values using the LDT encryption.
These changes allow us to have a more asynchronous implementaion.
When broadcasting we can:
1. Fetch the private credentials asynchronously.
2. Create the advertisement and start broadcasting when the credentials have been fetched.
When scanning we can:
1. Fetch public credentials asynchronously.
2. Start scanning for advertisements.
3. Update the decoder when new credentials are fetched.
PiperOrigin-RevId: 493998041
Add StopScan and refactor StartScan to return a sesssion id.
Move handling of StartScan, StopScan and NotifyFoundBle to the same thread to avoid race conditions.
Implement start advertising in service controller.
PiperOrigin-RevId: 492016697
Anay Wadhera