add de summary to fastlane

[IzzySoft]

Found this in our local tree, but missing here – so sending it up in the hope you find it useful 😉

[IzzySoft]

@alexbakker any chance for this to get merged? Would help us with our repo overhaul at IzzyOnDroid as well 🙏

Oh, btw, I see our badge is missing from the Readme. Aegis is available at https://apt.izzysoft.de/packages/com.beemdevelopment.aegis since 2024-11-05. Shall I amend this PR adding a badge? And maybe also a shield, to show the last known RB status of Aegis?

[<img src="https://shields.rbtlog.dev/simple/com.beemdevelopment.aegis" alt="RB Status">](https://shields.rbtlog.dev/com.beemdevelopment.aegis)

[IzzySoft]

As this is still without even a response, I must consider it is of minor interest for you. We have to move forward on our end nevertheless. So we'll remove the de locale now at our end; should you later decide to merge this PR, it will automatically be pulled back in with the next release following the merge.

Thanks for understanding!