add some packaging metadata

Summary:
feedback appreciated on the content

followed https://www.maturin.rs/metadata.html

closes #158

Reviewed By: rchen152

Differential Revision: D74199599

fbshipit-source-id: 569267a30c92c68b3d5a939a672203db5575882d

Author: yangdanny97

pyrefly/pyproject.toml

@@ -6,3 +6,25 @@ build-backend = "maturin"
 bindings = "bin"
 strip = true
 include = ["rust-toolchain"]
+
+[project.urls]
+homepage = "https://pyrefly.org"
+documentation = "https://pyrefly.org/en/docs/"
+
+[project]
+description = "A faster Python type checker written in Rust"
+readme = "../README.md"
+requires-python = ">=3.8"
+license = {file = "../LICENSE"}
+keywords = ["typechecker", "typechecking"]
+classifiers = [
+  "Development Status :: 3 - Alpha",
+  "Programming Language :: Python",
+  "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3 :: Only",
+  "Operating System :: MacOS",
+  "Operating System :: Microsoft :: Windows",
+  "Operating System :: POSIX :: Linux",
+  "Intended Audience :: Developers",
+  "Topic :: Software Development"
+]