Contact Diary - Onboarding screen (EXPOSUREAPP-4154) (#1868)

* Added basic layout

* Added translation support

* Added darkmode images

* Included dimens in layout

* Added navigation to onboarding fragment

* Changed AndroidManifest to support new contact diary activity

* Updated translation files

* Added missing image
Updated text styling
Changed layout naming

* Added back navigation

* Updated layout

* Added direct link to privacy information

* repair PR commit

* Changed back navigation

* repair

* Changed information text

* Fixed typo in module

* updated strings

* Aligned back navigation

* Changed margins
Remove unused back navigation functionality

* Added missing dimens

* Added missing dimens
Added updated icons
Added final layout
Updated strings
Updated viewmodel
removed unused code

* Moved contact diary strings

* Moved strings
Added line breaks
added dimens to dividers

Co-authored-by: BMItter <berndus@gmx.de>