fix steinbock

[LucaMarconato]

Closes #329

• ad.read() -> ad.read_h5ad()
• table -> tables in SpatialData constructor

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.07%. Comparing base (23bcb72) to head (a2bb7fc).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/spatialdata_io/readers/steinbock.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #354   +/-   ##
=======================================
  Coverage   55.07%   55.07%           
=======================================
  Files          26       26           
  Lines        2809     2809           
=======================================
  Hits         1547     1547           
  Misses       1262     1262           

Files with missing lines	Coverage Δ
src/spatialdata_io/readers/steinbock.py	34.04% <0.00%> (ø)

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