Look into zero copy writes for the websocket writer

[bdraco]

aiohttp/aiohttp/_websocket/writer.py

Line 138 in c95c025

self.transport.write(header + mask + message)

in python 3.12+ writelines does zero copy

[bdraco]

python/cpython#91166

Picows has a good benchmark to see if it matters

[bdraco]

#9634 still showed too much memcpy.... It should have been less so not sure why. Closing this