Adding text note hiding capability

[saw-a-bird]

Is your feature request related to a problem? Please describe.
Text note hiding capability

Describe the solution you'd like
Either allow a compatible app to modify the txt notes (not just saying "no suitable app found to open this document") Or introduce a simple textarea fields for the title and content in the app itself.

The thumbnail should simply say "Note" in the middle center.

Describe alternatives you've considered
I've already explaines in the above question.

Additional context
Why limit it to photos, videos and music?

[Hostuu]

I would like the document feature to be fixed too