1393 improve parameters io for graph ode based models

[MaxBetzDLR]

Changes and Information

Please briefly list the changes (main added features, changed items, or corrected bugs) made:

• Rework current structure to be more flexible and similar between models
• Define functions for each type of epidata setter, that works on a single region
• Use graph for setting epidata

Merge Request - Guideline Checklist

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Checks by code author

• Every addressed issue is linked (use the "Closes #ISSUE" keyword below)
• New code adheres to coding guidelines
• No large data files have been added (files should in sum not exceed 100 KB, avoid PDFs, Word docs, etc.)
• Tests are added for new functionality and a local test run was successful (with and without OpenMP)
• Appropriate documentation within the code (Doxygen) for new functionality has been added in the code
• Appropriate external documentation (ReadTheDocs) for new functionality has been added to the online documentation
• Proper attention to licenses, especially no new third-party software with conflicting license has been added
• (For ABM development) Checked benchmark results and ran and posted a local test above from before and after development to ensure performance is monitored.

Checks by code reviewer(s)

• Corresponding issue(s) is/are linked and addressed
• Code is clean of development artifacts (no deactivated or commented code lines, no debugging printouts, etc.)
• Appropriate unit tests have been added, CI passes, code coverage and performance is acceptable (did not decrease)
• No large data files added in the whole history of commits(files should in sum not exceed 100 KB, avoid PDFs, Word docs, etc.)
• On merge, add 2-5 lines with the changes (main added features, changed items, or corrected bugs) to the merge-commit-message. This can be taken from the briefly-list-the-changes above (best case) or the separate commit messages (worst case).

[codecov]

Codecov Report

❌ Patch coverage is 94.48560% with 67 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.30%. Comparing base (edb7428) to head (d6f9906).

Files with missing lines	Patch %	Lines
cpp/models/ode_secirts/parameters_io.h	56.14%	25 Missing ⚠️
cpp/models/ode_secirvvs/parameters_io.cpp	97.11%	13 Missing ⚠️
cpp/models/ode_secirts/parameters_io.cpp	97.50%	10 Missing ⚠️
cpp/models/ode_secirvvs/parameters_io.h	82.69%	9 Missing ⚠️
cpp/models/ode_secir/parameters_io.cpp	96.36%	8 Missing ⚠️
cpp/memilio/io/parameters_io.cpp	91.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1430      +/-   ##
==========================================
- Coverage   97.31%   97.30%   -0.01%     
==========================================
  Files         187      187              
  Lines       16018    15820     -198     
==========================================
- Hits        15588    15394     -194     
+ Misses        430      426       -4     

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