support for datatree from xarray

[melonora]

This PR fixes the issue of the deprecated datatree library now xarray directly supports DataTree. This PR will be dependent on a SpatialData release which in turn depends on a release of multiscale-spatial-image.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 94.28571% with 2 lines in your changes missing coverage. Please review.

Project coverage is 83.33%. Comparing base (0667ef8) to head (f069e78).

Files with missing lines	Patch %	Lines
src/spatialdata_plot/pl/utils.py	92.30%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #380      +/-   ##
==========================================
- Coverage   83.36%   83.33%   -0.04%     
==========================================
  Files           8        8              
  Lines        1653     1650       -3     
==========================================
- Hits         1378     1375       -3     
  Misses        275      275              

Files with missing lines	Coverage Δ
src/spatialdata_plot/pl/basic.py	89.21% <100.00%> (-0.06%)	⬇️
src/spatialdata_plot/pl/render.py	90.22% <100.00%> (-0.03%)	⬇️
src/spatialdata_plot/pl/render_params.py	100.00% <100.00%> (ø)
src/spatialdata_plot/pl/utils.py	77.46% <92.30%> (-0.03%)	⬇️