Add CLI for spatialdata_io.

[migueLib]

There was an initial commit done by @FloWuenne in the PR #72.

The commit will add :

• CLI for each of the readers to convert to SpatialData object.
• CLI for to convert generic formats to .zarr.

This commit should close issue #238 and #231 (? @LLehner, @LucaMarconato, @quentinblampey )
This commit is co-authored by: @chiarasch

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 4.31034% with 222 lines in your changes missing coverage. Please review.

Project coverage is 32.80%. Comparing base (cff4896) to head (59ed7f5).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
src/spatialdata_io/__main__.py	0.00%	198 Missing ⚠️
src/spatialdata_io/converters/generic_to_zarr.py	22.58%	24 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #239       +/-   ##
===========================================
- Coverage   45.50%   32.80%   -12.71%     
===========================================
  Files          22       25        +3     
  Lines        2149     2381      +232     
===========================================
- Hits          978      781      -197     
- Misses       1171     1600      +429     

Files with missing lines	Coverage Δ
src/spatialdata_io/__init__.py	100.00% <100.00%> (ø)
src/spatialdata_io/converters/__init__.py	100.00% <100.00%> (ø)
src/spatialdata_io/converters/generic_to_zarr.py	22.58% <22.58%> (ø)
src/spatialdata_io/__main__.py	0.00% <0.00%> (ø)

... and 5 files with indirect coverage changes

[migueLib]

Forgot to mention @melonora