Added shortest_path parameter to get_transformation_between_coordinate_systems

[quentinblampey]

Related to issue #713, CC @LucaMarconato

Note that I changed the structure of the code, which was highly nested. The logic should be the same though
I also added some tests!

[codecov]

Codecov Report

Attention: Patch coverage is 94.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 91.82%. Comparing base (8879aff) to head (9e5f1e4).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/spatialdata/transformations/operations.py	94.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #714      +/-   ##
==========================================
- Coverage   91.84%   91.82%   -0.02%     
==========================================
  Files          44       44              
  Lines        6791     6802      +11     
==========================================
+ Hits         6237     6246       +9     
- Misses        554      556       +2     

Files with missing lines	Coverage Δ
src/spatialdata/transformations/operations.py	88.83% <94.00%> (-0.91%)	⬇️

... and 1 file with indirect coverage changes

[LucaMarconato]

LGTM thanks!