Support dynamic version name in sglang's pyproject.toml (#4720)

python/pyproject.toml

 [build-system]
-requires = ["setuptools>=61.0", "wheel"]
+requires = ["setuptools>=61.0", "wheel", "setuptools-scm"]
 build-backend = "setuptools.build_meta"
 
+[tool.setuptools_scm]
+root = ".."
+version_scheme = "guess-next-dev"
+local_scheme = "node-and-date"
+fallback_version = "0.4.4.post1"
+
 [project]
 name = "sglang"
-version = "0.4.4.post1"
+dynamic = ["version"]
 description = "SGLang is yet another fast serving framework for large language models and vision language models."
 readme = "README.md"
 requires-python = ">=3.8"