[PR #9543/6ae2f05 backport][3.11] Add a PXD only Cython extension for the WebSocket reader to improve performance

[bdraco]

(cherry picked from commit 6ae2f05)

[codspeed-hq]

CodSpeed Performance Report

Merging #9548 will improve performances by ×2

_{Comparing patchback/backports/3.11/6ae2f053e9989a759b140e42937e2138f80e502d/pr-9543 (828f775) with 3.11 (751af18)}

Summary

⚡ 1 improvements
✅ 3 untouched benchmarks

Benchmarks breakdown

	Benchmark	3.11	patchback/backports/3.11/6ae2f053e9989a759b140e42937e2138f80e502d/pr-9543	Change
⚡	test_read_one_hundred_websocket_text_messages[pyloop]	1,322.8 µs	647.4 µs	×2

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.84%. Comparing base (751af18) to head (828f775).
Report is 275 commits behind head on 3.11.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             3.11    #9548   +/-   ##
=======================================
  Coverage   97.83%   97.84%           
=======================================
  Files         113      114    +1     
  Lines       35286    35315   +29     
  Branches     4233     4236    +3     
=======================================
+ Hits        34523    34554   +31     
+ Misses        571      570    -1     
+ Partials      192      191    -1     

Flag	Coverage Δ
CI-GHA	97.72% <99.55%> (+<0.01%)	⬆️
OS-Linux	97.42% <99.55%> (+<0.01%)	⬆️
OS-Windows	94.32% <23.89%> (-0.50%)	⬇️
OS-macOS	96.64% <23.89%> (-0.47%)	⬇️
Py-3.10.11	96.50% <23.89%> (-0.47%)	⬇️
Py-3.10.15	96.91% <99.55%> (+<0.01%)	⬆️
Py-3.11.10	96.98% <99.55%> (+<0.01%)	⬆️
Py-3.11.9	96.58% <23.89%> (-0.49%)	⬇️
Py-3.12.7	97.45% <99.55%> (+<0.01%)	⬆️
Py-3.13.0	97.44% <99.55%> (+<0.01%)	⬆️
Py-3.9.13	96.42% <24.00%> (-0.47%)	⬇️
Py-3.9.20	96.82% <98.66%> (-0.01%)	⬇️
Py-pypy7.3.16	96.46% <97.33%> (+<0.01%)	⬆️
VM-macos	96.64% <23.89%> (-0.47%)	⬇️
VM-ubuntu	97.42% <99.55%> (+<0.01%)	⬆️
VM-windows	94.32% <23.89%> (-0.50%)	⬇️

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[bdraco]

Tested on production Home Assistant.

All working as expected