Update to docusaurus v3

[Dr-Electron]

Description of change

Updated to v3

Links to any relevant issues

Fixes #1519.

Type of change

• Enhancement (a non-breaking change which adds functionality)

Change checklist

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own changes
• I have made sure that added/changed links still work
• I have commented my code, particularly in hard-to-understand areas

[Dr-Electron]

Currently it seems like with my versioning approach, the base paths without versions are broken.
So we need to properly fix versioning.
Also the saucelabs imports for code are not v3 compatible I think