feat: stable fetch

[ronag]

The remaining issues that I'm aware of is:

• cleanup listener for user provided AbortSignal #939, missing guidance from spec
• Coverage is only at 86%, missing collaborator help

[ronag]

Might be a good idea to wait for #1088, #1091

[codecov-commenter]

Codecov Report

Merging #1090 (9b2f0d7) into main (3d2ce43) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1090   +/-   ##
=======================================
  Coverage   95.10%   95.10%           
=======================================
  Files          39       39           
  Lines        3758     3758           
=======================================
  Hits         3574     3574           
  Misses        184      184           

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[mcollina]

I think we should keep it "experimental" until Node.js stabilized its own stream/web implementation.