Add Capacities

[Liquefy7822]

NOTE: Each discrete (stand-alone) request should be in its own issue.

Put "Add ____" as Title
[x ] Done

Provide a link to the proposed addition.
Place link here.

Explain why it should be added
Capacities is a note taking app that was not in the note-taking sections. It is also one of the different and unique note-taking apps that does not have a hierarchy based system but all documents are in a mindmap styled.

Additional context
Add any other context or screenshots about the feature request here.

Issue Checklist

Put an x in the boxes once you've completed each step. You can also fill these out after creating the issue. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before responding to the issue.

• [x ] I have checked for other similar issues
• [ x] I have explained why this change is important
• [x ] I have added necessary documentation (if appropriate)