QR Code stricter validation (EXPOSUREAPP-2570) (#1127)

* test for OnboardingFragment

* QR code stricter validations

* regex pattern improvement

* removed Obsolete test

* lint changes to fix pipeline issue

* logic refinement and test coverage improvement

* pipeline related fixes

* piepline related fixes : unnecessary test removed

* pipeline fixes and increased tests coverage

* QR code validation logic improvement

* detekt pipeline issue resolved

* pipeline issue Fix

* logic ovehaul and improvement for QRCode scans / validations

1, Data object for ScanResults
2. new Test for ScanResults
3. logic simplified

* removing unused imports from tests

* Small refactoring together with Rituraj.

* Adjust detekt, early abort via return is GOOD!

Co-authored-by: Matthias Urhahn <darken@darken.eu>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>