Create Check-in confirmation screen (EXPOSUREAPP-5424) (#2536)

* Refactoring

- Add basic setup for attendee and organizer
- Renaming and re-packing for already implemented screens

* Rename

* Add check in tab

* lint

* Connect scan fragment

* Navigate to confirm event

* Fix import

* lint

* Add FAB text

* Update MDC version

* Catch error

* Animate transition

* Add space

* Connect check-in flow

* Parse signed event

* Import SingleLiveData

* Add test

* Clean-up

* Delete ConfirmCheckInViewModel.kt

* Support new deeplink host and requirements

* Validate uri

* Update LauncherActivityTest.kt

* Renaming

* Trace location times are in seconds

* Delete redundants

* Remove destinations from main graph

those destinations are part of attendee graph now

* Use hard coded string

* Verify uri

* Pass QRCodeVerifyResult directly

* lint