feature/convert-to-npe2

[tlambert03]

converts plugin to npe2 (docs on creating npe2 plugins)

As discussed on zulip, the biggest impact for this plugin is the inability to have two virtual plugin entry points (in/out of mem) within a single plugin package. while we can provide multiple readers in a single plugin, we discussed that it might be better to just choose based on the filesize/memory available. I did that here with a 30% available mem or 4GB file size threshold. Seems to work well in local tests

this also:

• changes print statements to logs
• adds an npe2-specific test
• delays a few imports, or moves them entirely to TYPE_CHECKING clauses

[codecov-commenter]

Codecov Report

Merging #49 (7ad6c1d) into main (728bf8f) will increase coverage by 5.17%.
The diff coverage is 67.56%.

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
+ Coverage   83.59%   88.77%   +5.17%     
==========================================
  Files           7        3       -4     
  Lines         189      187       -2     
==========================================
+ Hits          158      166       +8     
+ Misses         31       21      -10     

Impacted Files	Coverage Δ
napari_aicsimageio/tests/test_core.py	94.44% <66.66%> (-5.56%)	⬇️
napari_aicsimageio/core.py	85.93% <67.85%> (-0.15%)	⬇️
napari_aicsimageio/__init__.py
napari_aicsimageio/tests/__init__.py

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[evamaxfield]

A single comment otherwise looks good to me!

[evamaxfield]

This is rough but understandable. Should become easier to generate in aicsimageio v5 though because plugins report which filetypes they support.

[tlambert03]

it's not strictly necessary... we could also use filename_patterns: ["*"] ... but this is preferable, as it will allow napari to do things like this make suggestions to a user that doesn't have aicsimageio installed that "there's a plugin that can help with this"

[evamaxfield]

Wait even my comment is ignorable. Merging now!