de_DE_OLDSPELL missing spell check data

[clecap]

Describe the feature and the current behavior/state

The de_DE_OLDSPELL spell-checking files for the traditional German language are missing.

Who will benefit from this feature?

Users who want to write in this language variant.

Any Other info

Until this feature is added TO the distribution, German-speaking users can find a solution here: https://github.com/clecap/Deutsche-Rechtschreibung