Markdown support for to-do list entries

[r4dh4l]

Your use case

What would you like to do?

I would like to create tick-able to-do lists with markdown like a shopping list:

• Fruits
  • Bananas
  • Apples
• Meat
  • Gnus
  • Penguins

Why would you like to do it?

My current way to handle a to-do list is writing every list item as single post and delete the post/task that I've completed (fast but you loose the checklist) or to add an ✅ emoji (time-consuming but you can keep the checklist).

How would you like to achieve it?

I know that GitLab provides tick-able to-do lists in the following way:

- [ ] Fruits
    - [ ] Bananas
    - [ ] Apples
- [ ] Meat
    - [ ] Gnus
    - [ ] Penguins

At least for the desktop client of Element this would be a proper way (maybe not really for the mobile apps because of the special characters).

Have you considered any alternatives?

No response

Additional context

No response

[germain-gg]

Thank you for sharing your ideas regarding the support for to-do list entries

I believe what brings a lot of value with those checkboxes would be the share their checked state with everyone.
There are to my knowledge no way of achieving this in the spec at the moment. For this to work we would need a way to send an event that toggles a checkbox status

I'd encourage you to read about the specification contribution guide to see how you would move this forward

[MadLittleMods]

Related to #330