Use CI to speedup the release process.
Any tips are welcomed as well

I ideally imagine using Github actions. The action should do following:

• Get triggered on new release (maybe tag) created
• Build the application in two configurations (app-release-arm.apk and app-release-multiarch.apk)
  • Upload them to newly created release
• Create app bundle which will be uploaded to google play and create new release (Ideally using fastlane)

This will require some actions on my side as well. And I am prepared to cooperate on that.

This blog post could be useful.