Add german readme (SillyTavern#2914)

* Create readme-de-de.md

* Update readme-ja_jp.md

Add link to german readme

* Rename readme-de-de.md to readme-de_de.md

Fixed wrong file name

* Update readme-ru_ru.md

Add link to german readme

* Update readme-zh_cn.md

Add link to german readme

* Update readme.md

Add link to german readme

* Update readme-de_de.md

Add message about outdated information

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Add suggested change for merge

Co-authored-by: Wolfsblvt <[email protected]>

* Update readme-de_de.md

Fixing issues for merging with original branch;

* Update readme-de_de.md

Fix using wront template for translation; (used release readme) :(

* Update readme-de_de.md

Changed overlooked remaining “Zweig” to “Branch”.

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

* Update .github/readme-de_de.md

Co-authored-by: Wolfsblvt <[email protected]>

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Co-authored-by: Wolfsblvt <[email protected]>