feat: flatten json files

[radiovisual]

• flattens json files before they are passed into the configuration

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 96.02%. Comparing base (2b8bb48) to head (c698ba7).

Files with missing lines	Patch %	Lines
src/utils/file-helpers.ts	75.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
- Coverage   99.23%   96.02%   -3.21%     
==========================================
  Files          20       21       +1     
  Lines         261      277      +16     
  Branches       47       48       +1     
==========================================
+ Hits          259      266       +7     
- Misses          1       11      +10     
+ Partials        1        0       -1     

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[radiovisual]

Closes #19