[Feature request]: Task list / checkbox list support

[paulirwin]

Description

Our users would like the ability to add a "Task list" or list of checkboxes like GitHub (and others) have. We're using Markdown, and this uses the following syntax of Markdown:

- [ ] Item one
- [X] Item two (completed)
- [ ] Item three

This would render in the editor as a list of checkboxes, and if you check the checkbox, it would toggle the checked state for the underlying list item (an X in Markdown).

This should be a menu item as well.

Please let me know if there is interest for adding this issue. While I might be able to help contribute it, I might not be the most efficient person to do that.

Problem Statement/Justification

Users want to be able to create a list of things to do, and check them off.

Additional Information

Example from GitHub:

As rendered in GitHub:

Willing to submit a PR?

Yes