feat: support sgl-kernel pypi (#2302)

sgl-kernel/pyproject.toml

@@ -0,0 +1,37 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "sgl-kernel"
+version = "0.0.1"
+description = "Kernel Library for SGLang"
+readme = "README.md"
+requires-python = ">=3.8"
+license = { file = "LICENSE" }
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: Apache Software License",
+]
+dependencies = ["numpy"]
+
+[project.optional-dependencies]
+srt = ["torch"]
+
+all = ["sgl-kernel[srt]"]
+
+[project.urls]
+"Homepage" = "https://github.com/sgl-project/sglang"
+"Bug Tracker" = "https://github.com/sgl-project/sglang/issues"
+
+[tool.setuptools.packages.find]
+exclude = [
+    "dist*",
+    "tests*",
+]
+
+[tool.wheel]
+exclude = [
+    "dist*",
+    "tests*",
+]