OKX strategy research and live execution tooling

lxy e85befe200 fix: align signed body with post payload		3 miesięcy temu
okx_codex_trader	e85befe200 fix: align signed body with post payload	3 miesięcy temu
tests	e85befe200 fix: align signed body with post payload	3 miesięcy temu
README.md	3f94692dec chore: scaffold okx codex trader project	3 miesięcy temu
pyproject.toml	3f94692dec chore: scaffold okx codex trader project	3 miesięcy temu

okx-codex-trader

Minimal project skeleton for the OKX Codex Trader demo CLI.