fix assets/ installation

[ericbuckley]

Description

Moved assets/ to within the src/ directory so data files can be found after setup tools installs the project.

Related Issues

closes #117

Additional Notes

Additionally, removed the symbolic initial_algorithms link in tests/unit/assets, and opted to just load the file directly from src now that its being installed. Did a rename of "load_json_assets" to "load_test_json_assets" so others are aware that its explicitly loading testing assets.

<--------------------- REMOVE THE LINES BELOW BEFORE MERGING --------------------->

Checklist

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• I have reviewed my changes to ensure they are clear, concise, and well-documented.
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Checklist for Reviewers

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• The code follows best practices and conventions.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.28%. Comparing base (3e83d55) to head (5fcfa5c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #121      +/-   ##
==========================================
+ Coverage   95.13%   95.28%   +0.15%     
==========================================
  Files          29       29              
  Lines        1294     1293       -1     
==========================================
+ Hits         1231     1232       +1     
+ Misses         63       61       -2     

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[ericbuckley]

@cbrinson-rise8 I had to resolve some merge conflicts and made an additonal change (renamed recordlinker.utils.init to recordlinker.utils.path). Could you give this another look?