feat: create navigation island

[spaenleh]

In this PR:

• fix Implement navigation island #570 implement the first proposal for the navigation island
• use 2 level navigation, which allows to specifx the root and the current item in the url
• add a redirection from /:rootId to /:rootId/:rootId to not break compatibility

This should fix multiple issues:

• previous navigation buttons obstructed the chatbox
• when navigating in a child, the second part of the url changes /:rootId/:itemId which fixes Page does not scroll to top on navigate to section #422
• Also the states of navigation are correctly reset on page change

Updated look of the island:

With pinned item and chatbox closed:

With pinned open and chatbox closed

Only chat closed:

Interaction video:
https://github.com/graasp/graasp-player/assets/39373170/c471acd8-3c21-4302-a9bf-465513c1804f

[pyphilia]

Thanks for the PR ! 🐞 LGTM, I guess your working on the chatbox button for non-folder as we discussed.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.6% Duplication on New Code

See analysis details on SonarCloud