Feature request: German language with OLD spelling rules (de-DE-1901)

[Binarus]

At first, thanks a lot for this extension! It works like a charm and is very smart about which code or text sections it should act on.

There's only one thing I am missing: Could you please add a German dictionary for the old spelling rules (sometimes called de-DE-1901)? Something like that, but for your VS Code extension of course:

https://extensions.libreoffice.org/en/extensions/show/german-de-de-1901-old-spelling-dictionaries

Thank you very much for reading this :-)