Fixed CallkitIncomingBroadcastReceiver throwing error on endAllCalls method

It is still throwing an error at the end the endAllCalls method when plugin tries to save data in shared preference but rest functionality has been fixed

Version 2.0.5+6

Default full screen notification for incoming call added.
Added List of reasons parameter

2.0.4+5: Update pubspec.yaml

Added a bottom sheet pop up on decline action