pr for bus and gen and sgen element schema

[lezneew]

The pandera network-schema need their own tests and validations to ensure correct network structure. This PRs cuts the previous structure_dict_extension into more digestible pieces

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.14%. Comparing base (d2f6e5b) to head (cae9699).

Additional details and impacted files

@@               Coverage Diff               @@
##           release/v4.0.0    #3166   +/-   ##
===============================================
  Coverage           73.14%   73.14%           
===============================================
  Files                 363      363           
  Lines               40836    40836           
===============================================
  Hits                29869    29869           
  Misses              10967    10967           

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[sonarqubecloud]

Quality Gate failed

Failed conditions
9.0% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud