feat: enable 3d for pygfx

[tlambert03]

there is a remaining bug/issue: after spending some time with it, I still can't get the pygfx orbit camera to rotate around the middle of the volume. will have to tackle it later

[codecov]

Codecov Report

Attention: Patch coverage is 76.27119% with 14 lines in your changes missing coverage. Please review.

Project coverage is 81.43%. Comparing base (95017fa) to head (187dfd3).

❗ Current head 187dfd3 differs from pull request most recent head fb7a174

Please upload reports for the commit fb7a174 to get more accurate results.

Files	Patch %	Lines
src/ndv/viewer/_backends/_pygfx.py	75.00%	14 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #15       +/-   ##
===========================================
+ Coverage   70.90%   81.43%   +10.53%     
===========================================
  Files          13       13               
  Lines        1172     1212       +40     
===========================================
+ Hits          831      987      +156     
+ Misses        341      225      -116     

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