Add sparse stochastic transitions

[MaxBlesch]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 96.38554% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.26%. Comparing base (3fbfd68) to head (474acf0).

Files with missing lines	Patch %	Lines
...re_processing/model_structure/stochastic_states.py	97.26%	2 Missing ⚠️
src/dcegm/pre_processing/setup_model.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                   @@
##           more_debug_options     #189      +/-   ##
======================================================
+ Coverage               91.06%   91.26%   +0.19%     
======================================================
  Files                      66       66              
  Lines                    2004     2084      +80     
======================================================
+ Hits                     1825     1902      +77     
- Misses                    179      182       +3     

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