Use code generation instead of calling `Signature.build_request`?

[eigenein]

Currently, each backend is forced to call Signature.build_request for every call:

combadge/combadge/support/zeep/backends/sync.py

Line 87 in 8b60b1b

request = signature.build_request(Request, self, args, kwargs)

I'm wondering if instead it could generate a «request builder», which would be generated once and contain calls to all the markers. The same applies to apply_response_markers:

combadge/combadge/support/httpx/backends/sync.py

Line 56 in 8b60b1b

return signature.apply_response_markers(response, payload, response_type)