[META] Feature Model Viewer Usability Bugs and Enhancements

[h3ssto]

• Limits when zooming (e.g., 0.125 rem / 5rem)
• Remove directional zooming #406
• Middle mouse button click -> "fit to view"
• Current, can't "grab" the model on a feature cofmed#1
• Reset view should always switch back to top-down drawing and "fit to view"
• Short names makes some names longer (e.g., Root -> Root...) #377
• "Adjust Levels" and "Adjust Max Children" does not work as expected
• Tutorial should be cancelable via Esc, or click outside of the modal

Sidemenu -> Change Direction to Horizontally

• Bug
  When collapsing a feature, the triangle is not rotated:
  

• Improvement: When changing in any direction, execute "fit to view" afterwards

Additions (2023-12-10): (see #420)