feat: support websocket upgrade listener

[nksaraf]

Add websocket support for listhen by adding a ws option. its enabled by default.

We enable websockets by adding an on('upgrade') handler that calls our handle function (node listener) and gives you a change to upgrade it in your handler.

The actual upgrade is the responsibility of the handler, this just makes it possible to do with the cli and everything

[codecov]

Codecov Report

Attention: 44 lines in your changes are missing coverage. Please review.

Comparison is base (8b873f0) 52.19% compared to head (83f1675) 51.18%.
Report is 8 commits behind head on main.

❗ Current head 83f1675 differs from pull request most recent head e4d8568. Consider uploading reports for the commit e4d8568 to get more accurate results

Files	Patch %	Lines
playground/index.ts	0.00%	35 Missing ⚠️
src/cli.ts	0.00%	6 Missing ⚠️
src/listen.ts	66.66%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #128      +/-   ##
==========================================
- Coverage   52.19%   51.18%   -1.02%     
==========================================
  Files          17       17              
  Lines        1686     1733      +47     
  Branches      145      147       +2     
==========================================
+ Hits          880      887       +7     
- Misses        801      841      +40     
  Partials        5        5              

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[pi0]

thanks for initial efforts. i will rework it with crossws