Add benchmark for roundtrip of 100 large WebSocket messages

[bdraco]

SSIA

For testing if #9634 is viable

Looks like almost all the overhead is memcpy

[bdraco]

Will need to tweak it a bit for 3.10

[codspeed-hq]

CodSpeed Performance Report

Merging #9645 will not alter performance

_{Comparing large_ws_message_roundtrip (4f251a2) with master (70a2c34)}

Summary

✅ 10 untouched benchmarks

🆕 1 new benchmarks

Benchmarks breakdown

	Benchmark	master	large_ws_message_roundtrip	Change
🆕	test_one_thousand_large_round_trip_websocket_text_messages[pyloop]	N/A	32.6 ms	N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.64%. Comparing base (70a2c34) to head (4f251a2).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9645   +/-   ##
=======================================
  Coverage   98.64%   98.64%           
=======================================
  Files         115      115           
  Lines       35395    35417   +22     
  Branches     4196     4199    +3     
=======================================
+ Hits        34916    34938   +22     
  Misses        321      321           
  Partials      158      158           

Flag	Coverage Δ
CI-GHA	98.53% <100.00%> (+<0.01%)	⬆️
OS-Linux	98.20% <100.00%> (+<0.01%)	⬆️
OS-Windows	96.11% <100.00%> (+<0.01%)	⬆️
OS-macOS	97.42% <100.00%> (+<0.01%)	⬆️
Py-3.10.11	97.28% <100.00%> (+<0.01%)	⬆️
Py-3.10.15	97.68% <100.00%> (+<0.01%)	⬆️
Py-3.11.10	97.76% <100.00%> (+<0.01%)	⬆️
Py-3.11.9	97.35% <100.00%> (-0.01%)	⬇️
Py-3.12.7	98.23% <100.00%> (+<0.01%)	⬆️
Py-3.13.0	98.22% <100.00%> (+<0.01%)	⬆️
Py-3.9.13	97.19% <100.00%> (-0.01%)	⬇️
Py-3.9.20	97.59% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.16	97.21% <100.00%> (+<0.01%)	⬆️
VM-macos	97.42% <100.00%> (+<0.01%)	⬆️
VM-ubuntu	98.20% <100.00%> (+<0.01%)	⬆️
VM-windows	96.11% <100.00%> (+<0.01%)	⬆️

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[patchback]

Backport to 3.10: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.10/541b14965b81363c2ee3c5e2030333fb5bd4565d/pr-9645

Backported as #9647

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 3.11: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.11/541b14965b81363c2ee3c5e2030333fb5bd4565d/pr-9645

Backported as #9648

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.