Make light sources and shapes work

[jmuhlich]

This gets seven more example files to pass. Annotations are next on my list. In the process of stretching the override system even further with a new slot I decided to refactor the entries into instances of a small new dataclass for better readability.

[codecov-commenter]

Codecov Report

Merging #17 into master will increase coverage by 0.26%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #17      +/-   ##
==========================================
+ Coverage   95.20%   95.46%   +0.26%     
==========================================
  Files           1        1              
  Lines         396      419      +23     
==========================================
+ Hits          377      400      +23     
  Misses         19       19              

Impacted Files	Coverage Δ
src/ome_autogen.py	95.46% <100.00%> (+0.26%)	⬆️

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[tlambert03]

more awesomeness. thanks! totally fine with the hacks and extensions to overrides for now. will be much easier to refactor once we see how it needs to look in order to work.

is this all set to go?

[jmuhlich]

Yes, ship it!