F-Droid: Add Fastlane File Structure for App Description

[wba2hi]

By adding the Fastlane File Structure we can speed up the time necessary from pushing a tag until it being shown in the F-Droid App store. Furthermore it is possible to provide the corresponding data, images and screenshots to be shown on the app page.

The file structure required can be seen here:

• https://gitlab.com/-/snippets/1895688

More info about fastlane can be found here:

• https://docs.fastlane.tools/actions/supply/

Also in scope of this ticket:

• Prepare MetaData File 'org.eclipse.kuksa.companion.yaml' as described here: https://gitlab.com/fdroid/fdroiddata/blob/master/CONTRIBUTING.md#metadata-preparation-without-fdroidserver
• see: https://f-droid.org/docs/Build_Metadata_Reference/

[wba2hi]

Ticket is (softly) blocked by #14 (not mandatory, but nice to have) Ticket is blocked by #15 (package is used for MetaData file) Ticket is blocked by #16 (required for version and changelog) Ticket is blocked by #17