Fix sidenav styles and upgraded to M3

[wuda-io]

Proposed changes

Changed the Sidenav to support mostly Material3 Guidlines. Some smaller things are missing. Also nesting is possible now.
Removed floating styles and bullet points. Fixed #373.

Screenshots (if appropriate) or codepen:

Bildschirmaufzeichnung.vom.2023-06-14.01.16.59.webm

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to change).

Checklist:

• I have read the CONTRIBUTING document.
• My commit messages follows the conventional commit format
• My change requires a change to the documentation, and updated it accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.