feat: run optimize against assets added later by plugins for webpack@5

[cap-Bernardito]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

Run optimize against assets added later by plugins for webpack@5

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #47 (d8575f8) into master (66c054f) will decrease coverage by 0.33%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #47      +/-   ##
==========================================
- Coverage   97.56%   97.22%   -0.34%     
==========================================
  Files           5        5              
  Lines         246      252       +6     
  Branches       93       95       +2     
==========================================
+ Hits          240      245       +5     
- Misses          5        6       +1     
  Partials        1        1              

Impacted Files	Coverage Δ
src/index.js	96.75% <100.00%> (-0.45%)	⬇️

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