Move stand alone functions to NodeAlgorithms.hpp

[marcosbento]

Description

Move stand alone functions to NodeAlgorithms.hpp

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

🌦️ >> Documentation << 🌦️
https://sites.ecmwf.int/docs/dev-section/ecflow/pull-requests/PR-268

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.24%. Comparing base (fbb8efd) to head (64ea30d).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #268      +/-   ##
===========================================
- Coverage    49.26%   49.24%   -0.02%     
===========================================
  Files         1231     1231              
  Lines        96993    96996       +3     
  Branches     14859    14860       +1     
===========================================
- Hits         47779    47767      -12     
- Misses       49214    49229      +15     

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