refactor(lib): simplify structure, separate packages

[cdcabrera]

What's included

• docs(dotenv): add public path webpack tip
• fix(wpConfigs): avoid webpack merge on open path list
• refactor(lib): simplify structure, separate packages
• fix(wpConfigs): devServer, config watchFiles paths
• fix(dotenv): apply default contextPath
• test(fixtures): removeFixture, clean up

How to test

Coverage and basic unit test check

1. update the NPM packages with $ yarn
2. $ yarn test
3. confirm tests come back clean

...

Example

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Updates issue/story

ongoing

[codecov-commenter]

Codecov Report

Merging #8 (3d26154) into main (6d966d1) will decrease coverage by 1.11%.
The diff coverage is 81.48%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
- Coverage   84.54%   83.43%   -1.11%     
==========================================
  Files           7        7              
  Lines         317      332      +15     
  Branches      104      108       +4     
==========================================
+ Hits          268      277       +9     
- Misses         43       49       +6     
  Partials        6        6              

Files	Coverage Δ
src/wpConfigs.js	78.08% <80.00%> (-0.05%)	⬇️
src/dotenv.js	85.71% <82.35%> (-3.02%)	⬇️

... and 1 file with indirect coverage changes

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