Add benchmark for sending binary WebSocket messages #7465

Job	Run time
Generate llhttp sources	7s
Linter	1m 25s
Benchmark	2m 10s
Test (3.9, ubuntu, false)	6m 0s
Test (3.9, macos, false)	4m 39s
Test (3.9, windows, false)	6m 48s
Test (3.9, Y, ubuntu, false)	8m 21s
Test (3.10, ubuntu, false)	6m 34s
Test (3.10, macos, false)	4m 39s
Test (3.10, windows, false)	6m 16s
Test (3.10, Y, ubuntu, false)	7m 26s
Test (3.11, ubuntu, false)	7m 21s
Test (3.11, macos, false)	5m 36s
Test (3.11, windows, false)	7m 9s
Test (3.11, Y, ubuntu, false)	7m 4s
Test (3.12, ubuntu, false)	6m 28s
Test (3.12, macos, false)	4m 44s
Test (3.12, windows, false)	7m 5s
Test (3.12, Y, ubuntu, false)	7m 42s
Test (3.13, ubuntu, false)	6m 35s
Test (3.13, macos, false)	4m 51s
Test (3.13, windows, false)	9m 9s
Test (3.13, Y, ubuntu, false)	8m 7s
Test (pypy-3.9, Y, ubuntu, false)	13m 46s
Test (ubuntu, 3.14, true, Y)	2m 33s
check	1s
Pre-Deploy	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Tarball	0s
Deploy	0s
	2h 32m 36s

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