* adding base choose name fragment with UI
* add click handling for the display name actions
* updating real account display name
* setting the initial disabled state when the view is created
* adding header padding which would have been a toolbar
* exiting the flow on display name updated or skipped, the next PR will introduce the profile picture screen
* updating view model state testing to take all emissions into account
* adding tests around the onboarding view model
- cases for the personalisation and display name actions
* using colorSecondary instead of accent as per quality script rule
* making use of viewevent delegating action for the back handling
* using debounced clicks
* consuming the back action when existing the display name fragment via viewmodel
* making the keyboard imeDone update the display name
