* TODO Display checkbox progress (as virtual text) [2/4]

### Does this feature exist in Emacs orgmode core?

Yes

### Orgmode link

https://orgmode.org/manual/Checkboxes.html

### Feature value

_No response_

### Additional context

``` org
* TODO big task with checkboxes [3/3]
  - [x] Is part of org mode
  - [x] is very useful
  - [x] Should not be hard to implement 
```

