Can now specify which 'layer' of the AnnData table to use

[Sonja-Stockhaus]

Should solve #326

Plus: 2 bugfixes when coloring points by values in a table:
a) coloring by values in table.X didn't work before
b) Error when using the groups argument while the values to color by are stored in a table

[Sonja-Stockhaus]

This PR depends on scverse/spatialdata#818

[Sonja-Stockhaus]

Todo:

• Delete utils.get_values_point_table()? Fully use spatialdata's get_values()
• Tests

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 85.48387% with 9 lines in your changes missing coverage. Please review.

Project coverage is 83.83%. Comparing base (12f490d) to head (c5d0c42).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/spatialdata_plot/pl/utils.py	77.50%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #402      +/-   ##
==========================================
+ Coverage   83.76%   83.83%   +0.06%     
==========================================
  Files           8        8              
  Lines        1694     1732      +38     
==========================================
+ Hits         1419     1452      +33     
- Misses        275      280       +5     

Files with missing lines	Coverage Δ
src/spatialdata_plot/pl/basic.py	89.26% <ø> (ø)
src/spatialdata_plot/pl/render.py	91.16% <100.00%> (+0.38%)	⬆️
src/spatialdata_plot/pl/render_params.py	100.00% <100.00%> (ø)
src/spatialdata_plot/pl/utils.py	78.00% <77.50%> (-0.09%)	⬇️

[Sonja-Stockhaus]

• Delete utils._robust_get_value?
• Depends on add support for layer selection in get_values() method spatialdata#818 => wait until next spatialdata release
• Undo change in pyproject.toml (spatialdata version)

[timtreis]

@LucaMarconato this PR is waiting for the next SpatialData release - do you have an ETA for that?

[LucaMarconato]

@LucaMarconato this PR is waiting for the next SpatialData release - do you have an ETA for that?

Yes, today 😁

[timtreis]

Added validation function, otherwise lgtm