Suggest changes inline

Is your feature request related to a problem? Please describe.
No, but switching from Word/Google Docs/LibreOffice/etc. is often not an option because there are no great options to collaborate asynchronously and suggest changes in Nextcloud Text. Currently, reviewing drafts asynchronously is hard because the only option to leave comments are > style quotes. E.g.

The above text needs to be written more formally.

Describe the solution you'd like
The possibility of submitting proposed changes that can be accepted or rejected by others would greatly simplify or enable (asynchronous) collaboration between different team members. From my personal experience, this is a much requested feature that keeps people from switching.

Describe alternatives you've considered
Alongside inline/per block comments (#185, #6478) and improved diffs (#4422), this feature provides additional possibilities for (asynchronous) collaboration.

Additional context
Here are some examples of popular editors with similar features.

Google Docs

LibreOffice Text

OnlyOffice

No source file, test, or entry point is named in the issue. Begin by locating the Nextcloud Text editor and its collaboration or review flow, then define acceptance and rejection behavior and corresponding coverage before implementation.