Example:
* The configuration says `;Information:Information|@Description=Beschreibung`
* The source wikitext contains `{{Information|Beschreibung=Beispiel}}`
* The result should be `{{Information|Description={{de|Beispiel}}}}`
* The language should match the default content language of the source wiki. Ideally, this value is already somewhere in the API request already made. For an MVP it might be enough to simply use the third-level domain, e.g. `de.wikipedia.org` becomes `{{de|…}}`.
Possible follow-up tasks:
[] Make sure the target wiki actually contains a template with the language code. E.g. `{{de|…}}` should only be used if commons.wikimedia.org/wiki/Template:de actually exists. (Can be a redirect.) If one doesn't exist, **don't** fall back to `{{en|…}}`, but don't insert any language template.