1433 partial convert of base types for parameters io of graph

[MaxBetzDLR]

Changes and Information

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

• Add converter to Population and helper function for parameter io of graph
• Simplify graph building with constructor

Merge Request - Guideline Checklist

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Checks by code reviewer(s)

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[reneSchm]

Quick review, looks mostly good, though I am unsure that we want to merge the untested and unfinished convert functions?

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.29%. Comparing base (86188d3) to head (bcf14e2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1434      +/-   ##
==========================================
- Coverage   97.31%   97.29%   -0.03%     
==========================================
  Files         187      187              
  Lines       16007    16018      +11     
==========================================
+ Hits        15577    15584       +7     
- Misses        430      434       +4     

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