Enter markdown directly

[beccon4]

Is your feature request related to a problem? Please describe.
As Markdown is popular in many aspects I learned to write text directly into it. I can do so in many programs/systems but not in Nextcloud Text.

Describe the solution you'd like
Allow to change the input mode to "raw" and enter Markdown directly while keeping all the collaboration and smart tag functionality .

[juliusknorr]

Closing as a duplicate of #3570