Add documentation for the phone API keys feature

Send event when app cannot send SMS

Opt out of edge to edge enformcement

Add missed call event

Prevent retries when a message is deleted before the event is sent

Merge branch 'main' of github.com:NdoleStudio/httpsms

Fixed the 'Too many receivers, total of 1000, registered' bug

Add optional requestID comment

Remove unused model

Merge branch 'main' of github.com:NdoleStudio/httpsms into main