672 create a supported models class property for hssm

[cpaniaguam]

This pull request includes several updates to the docs/tutorials/main_tutorial.ipynb and src/hssm/hssm.py files. The changes primarily focus on improving documentation and adding new functionalities to the HSSM class.

Codebase enhancements:

• Added a classproperty decorator to the HSSM class in src/hssm/hssm.py to allow class-level properties that perform computations or access class-level data. This decorator ensures compatibility across Python versions 3.10 through 3.12.
• Introduced a new supported_models class property in the HSSM class to return a tuple of all supported model names.

Documentation updates:

• Updated references to model accessors in docs/tutorials/main_tutorial.ipynb to reflect the new structure, changing hssm.defaults.SupportedModels to hssm.HSSM.supported_models and updating the method to check detailed model information. [1] [2] [3] [4] [5]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
src/hssm/hssm.py	77.85% <100.00%> (+0.25%)	⬆️

[AlexanderFengler]

looks good! Thanks @cpaniaguam