aiac: add German translation

[gummipunkt]

added german

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[tldr-bot]

Hello! I've noticed something unusual when checking this PR:

• The page pages.de/osx/aiac.md has a more info link that does not match the one in the English page. Please check the "More information:" translation as well using https://github.com/tldr-pages/tldr/blob/main/contributing-guides/translation-templates/more-info-link.md.

Is this intended? If so, just ignore this comment. Otherwise, please double-check the commits.

[Managor]

Please sign the CLA or we won't be able to merge this

[Managor]

OP has not signed the CLA. Closing this.