Add more options to debug models

[MaxBlesch]

The pull requests adds

• several functions to the interface for investigating the solution of the model
• the option of sparse stochastic transitions

[codecov]

Codecov Report

❌ Patch coverage is 82.78867% with 79 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.55%. Comparing base (d8860f4) to head (6d22fc5).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/dcegm/interfaces/model_class.py	50.79%	31 Missing ⚠️
src/dcegm/interfaces/interface_checks.py	65.30%	17 Missing ⚠️
src/dcegm/interfaces/inspect_solution.py	82.05%	14 Missing ⚠️
src/dcegm/interfaces/sol_interface.py	69.04%	13 Missing ⚠️
src/dcegm/interpolation/interp_interfaces.py	92.59%	2 Missing ⚠️
src/dcegm/interfaces/index_functions.py	83.33%	1 Missing ⚠️
...re_processing/model_structure/stochastic_states.py	98.63%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #179      +/-   ##
==========================================
- Coverage   94.90%   92.55%   -2.36%     
==========================================
  Files          63       67       +4     
  Lines        1826     2175     +349     
==========================================
+ Hits         1733     2013     +280     
- Misses         93      162      +69     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[review-notebook-app]

Check out this pull request on 

See visual diffs & provide feedback on Jupyter Notebooks.

---

Powered by ReviewNB

[segsell]

Nice improvements to the interface. Thank you!!