Markdown for text fields

[KonzeptAcht]

Is your feature request related to a problem? Please describe.
Formatting text fields is currently only possible in a very rudimentary way. For example, the insertion of functional hyperlinks is not possible.

Describe the solution you'd like
It would be nice to be able to do formatting in the text fields. For example, Markdown could be used for this.

Describe alternatives you've considered
Still inconvenient work with the current text field