Avoid double loading

[jo-mueller]

Fixes #61. Essentially, the treeview and the thumbgrid both load an image upon clicking an item, but selecting an item in the treeview autoselects the respective item in the thumbgrid -> double selection.

This PR basically checks whether the two are in sync and triggers the loading only once.

[tlambert03]

please add yourself (and @psobolewskiPhD while you're at it) to the authors list as well!

[psobolewskiPhD]

Makes sense to me and it works nicely locally.
Whether you click the list view or the thumbnail, there is no double loading and the selection in the two remains synced.

[psobolewskiPhD]

I fixed the conflict--go new CI! 🚀

[tlambert03]

random side note: either of you should be able to push a new release to PyPI by tagging a commit on main and pushing to main. for example:

git tag -a v0.2.0 -m v0.2.0
git push upstream --follow-tags

[psobolewskiPhD]

Thanks @tlambert03 !
Let's put that in the README for our future selves:
#70

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 33.13%. Comparing base (5ec1a5b) to head (957e775).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/napari_omero/widgets/main.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #64      +/-   ##
==========================================
- Coverage   33.21%   33.13%   -0.08%     
==========================================
  Files          13       13              
  Lines         843      845       +2     
==========================================
  Hits          280      280              
- Misses        563      565       +2     

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[psobolewskiPhD]

For the sake of expediency, I'm going to ignore the coverage fails and just merge.
@jo-mueller I think this plus the groups thing is pretty good for a release? unless we want to try to tackle some other things.
I'll let y'all do the honors.

[jo-mueller]

@psobolewskiPhD I agree with the release. I guess some of the bugs that may or may not be slumbering in the code will only show up over time, anyways.