Rename lint environment as types, add codespell for spell checking, update mypy and ruff configuration, update test environment, turn tests to async tests, update workflows accordingly, add py.typed to let code editors know the package is typed

Rename lint environment as types, add codespell for spell checking, update mypy and ruff configuration, update test environment, turn tests to async tests, update workflows accordingly, add py.typed to let code editors know the package is typed #52