Modernize project for compatibility with uv#71

StephenOman merged 2 commits intoNetHack-LE:mainNetHack-LE/nle:mainfrom

jbcoe:jbcoe/migrate-to-pyproject-toml-and-uvjbcoe/nle-nethack:jbcoe/migrate-to-pyproject-toml-and-uvCopy head branch name to clipboard