[FR] Partially Checked / Indeterminate Checkboxes

[AlexanderWillner]

1~3 main use cases of the proposed feature
I suggest to support partially checked / indeterminate checkboxes. A good feature request with examples and implementation details are given at https://gitlab.com/gitlab-org/gitlab/-/issues/229189.

what types of users can benefit from using your proposed feature
Anyone who thinks task completion is not just binary.

Additional context

Input:

- [x] Item 1
- [-] Item 2
- [ ] Item 3

Output:

[annieappflowy]

Thanks, Alex. This will be considered as a community plug-in block.