Create indented action lists

As a user, I would like to be able to create indented action lists

Why is it important

Creating sub-actions are useful to organize bigger tasks that are broken into smaller steps

Suggested solution

Have a similar solution as what was found in the Legacy Editor / Server editor

From CONFCLOUD-59780:

Expected Results

The list should be indented as image below:

Actual Results

The list is not indented, as you can see below:
 

From CONFCLOUD-65814:

Expected Results

The copying example:

• The paragraph should come with the same indentation than the source

The manual example:

• Hitting TAB should get only the first line indented.

Actual Results

The copying example:

• The paragraph comes with a Confluence default indentation.

The manual example:

• Hitting TAB gets all the paragraph indented.