Consolidate release strategy

[fremartini]

Based on the new appbundle release strategy, we can no longer release development-versions as Firebase requires a published app to accept appbundles. One solution is to continue building APK's for development builds and only use AAB's for production builds which introduces an inconsistency between the builds.

I propose the following new release strategy:

Environment/Action	Database	Description	Firebase environment
Build locally	Development	Connect to development environment while creating new features	N/A
Open pull request to main	Development	Release APK with version: {branch_name (build_number)} e.g frem/consolidate_release_strategy (123) for testing	Dev
Push to main	Production	Build Appbundle and release Preview build to Firebase	Prod
GitHub release from main	Production	Build Appbundle and release production version	Prod

• Distribute test version on pull request #534
• Distribute pre-release app version #535

Relates to #462