feat: add response WPTs

[KhafraDev]

Add most response wpts. Didn't add 1 file because just about every test failed (seemed to be an issue with node's web streams or structuredClone, didn't look into it though).

All of the added expected fails have to do with the formData body mixin method, other than 1 test which required FileReader.

398 tests -> 587 tests with only 4 extra failures and only 1 small fix needed🚀

[codecov-commenter]

Codecov Report

Base: 94.25% // Head: 94.21% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (63ae090) compared to base (733b3a0).
Patch coverage: 50.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1684      +/-   ##
==========================================
- Coverage   94.25%   94.21%   -0.04%     
==========================================
  Files          53       53              
  Lines        4887     4890       +3     
==========================================
+ Hits         4606     4607       +1     
- Misses        281      283       +2     

Impacted Files	Coverage Δ
lib/fetch/body.js	96.33% <50.00%> (-0.88%)	⬇️

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