docs: Add a set of examples in cookbook

[jacopoabramo]

A PR to provide a cookbook section in the documentation which can be used as a reference to use ndv in different contexts.

I added 3 examples on how to embed ArrayViewer.widget() in a custom Qt application (was also a learning experience for me!)

• ndv with a couple of pushbuttons to select one dataset or the other;
• multiple ndv.ArrayViewer widgets in the same QWidget;
• a pseudo-microscope dashboard using openwfs.

In the first example I also wanted to add a button to show the cells3d dataset but after loading it, the 2D datasets were squashed and I did not know how to fix the behavior; for a minimal example though I believe it should work even without cells3d

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.85%. Comparing base (7da803e) to head (ef6ee85).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #123   +/-   ##
=======================================
  Coverage   75.85%   75.85%           
=======================================
  Files          49       49           
  Lines        4950     4950           
=======================================
  Hits         3755     3755           
  Misses       1195     1195           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[tlambert03]

super cool! ❤️ thank you!

I have a few suggestions/requests. I'll mark them inline

[jacopoabramo]

Hopefully that should do it

[tlambert03]

perfect. thanks I'm very happy with this. Will follow up shortly to get those awesome screenshots back