Text: Add support for orgmode files

[csantosb]

Is your feature request related to a problem? Please describe.
I manage to open and edit .txt and .md files, but not .org files. Currently, I need to rename .org to .md file names.

Describe the solution you'd like
At a minimum, being able to word with .org files the same way as I'm doing with .md files.

Describe alternatives you've considered
At some far away point in time, I have to investigate the use of organice as another option for editing .org files.

Additional context

[jospoortvliet]

what is a .org file? Lotus Organizer? Microsoft Origin? I'm not sure we want to add more file types, especially if there are conflicts with other apps that use the same file type...

[csantosb]

Orgmode is a broadly used markup language, similar to markdown, but with much more extended capabilities. It would be great to have access to similar features to the existing ones, but adapted to org: headings, listings, bolds, etc.

[ParaplegicRacehorse]

I would lovelovelove to have a decent org editor for Nextcloud. Also asciidoc. I never write in markdown when I have an org-mode or asciidoc option. Because I sometimes have to edit a file on a device which is not synced, being able to work with my favorite markup syntaxes (org and asciidoc) in the NC web interface would be awesome.

Right, and also ledger/hledger/beancount, but this might be better suited as a separate NC-app. :grin:

This is related to #394

[juliushaertl]

This is out of scope of the text app. We aim to provide a visual editor and are using markdown mainly because it comes with the benefit of having a easily readable plaintext file that also works when opening it outside. Supporting a parsing and serializing a rich formatted document to a different format is currently not on our roadmap.

[juliushaertl]

For opening org mode files in plain text editing mode see https://github.com/nextcloud/text/issues/394