Add possibilty to structure custom templates in folders (Confluence Cloud)

[Scrat94]

• [x] I agree to follow the Code of Conduct that this project adheres to.
• [x] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Describe the solution you'd like It would be cool, to structure the custom templates in subfolders (sub-pages in confluences) similiar what is already used for the cloud templates (in the template selection pop-up, there is a blue/white arrow, which you can extend/collapse to show the subcategories "AWS", "Azure", "IBM"). I would like to do the same for our corporate custom templates in Confluence Cloud

Let me know, if you think this idea is suitable.