Introduce Phone sync screen

[ThomazFB]

When the user opens the WearOS app, we should be able to start a sync with the user's phone to fetch the Store Credentials.

This task is focused on introducing the UI that will be displayed during the sync.

### Tasks
- [ ] Create Compose views for the pairing and waiting views
- [x] Create navigation route between the two views based on events

[dangermattic]

Thanks for reporting! 👍