[Feature Request] "Append to Note" share target

[Lehmanator]

One of the features I miss from the Nextcloud Notes Android app is a share target "Append to Note" that opens an activity for the user to select an already existing note, then appends the shared content.

I use this for quick lists of interesting links that I can go back and edit/format/organize when I have time. Allows users to avoid cluttering the list of notes with new entries that could better fit within an existing note.

OpenNote already has a share target "New Note" that creates a new note with the shared content. It would be nice to have another for "Append to Note", especially if one could select multiple notes to append the content to simultaneously.