Is your feature request related to a problem? Please describe.
Just for keeping things tidy on the Mkdocs Nav bar the current way where the links are all in a row going down the page without a way to organize them makes it harder for users to find the correct places to look for the documentation/coverage reports

Describe the solution you'd like
A way to store the docs under a collapsible folder, this could be per coverage file or a global plug-in wide setting, an example is below of what would be amazing :)

Describe alternatives you've considered
Ive attempted to make some changes to the code to allow for this but lack the knowledge of MKdocs and what it requires to make the adequate changes

Additional context

Im sorry if there is a way to do this and i've not found it

i've attempted moving the report dir to sub folders but that isn't registered as an option in the menu/navbar