Make the extension translatable on Crowndin

[dogawaf]

It would be valuable if the extension could be translated on Crowdin.

https://docs.typo3.org/m/typo3/reference-coreapi/master/en-us/ApiOverview/Internationalization/TranslationServer/Crowdin/ExtensionIntegration.html

I would be happy to contribute in French.

Best regards

[cweiske]

I'd like to add a German translation for the "Exclude this page for slug generation of subpages" label.

[cweiske]

@dogawaf - I've submitted a patch that added the german locallang file, and it was merged. You could do that, too.