Embed country list for submission of keys screen (EXPOSUREAPP-2738) (#1234)

* Added country list to submission of keys screen

* Ktlint changes

* Added missing  s

* Added text changes

* Removed file from wrong location

* Reverted back to old way of instantiating countryList in SubmissionViewModel

* Removed hardcoded spacing

* Changed country list text style from bold to paragraph size

* Added dimen everywhere and added back en string

Co-authored-by: Alexandru.Paulescu <alexandru.paulescu@sap.com>