fix(build): include more files in sdist builds (#1504)

pyproject.toml

@@ -105,6 +105,21 @@ include = [
 [tool.hatch.build.targets.wheel]
 packages = ["src/openai"]
 
+[tool.hatch.build.targets.sdist]
+# Basically everything except hidden files/directories (such as .github, .devcontainers, .python-version, etc)
+include = [
+  "/*.toml",
+  "/*.json",
+  "/*.lock",
+  "/*.md",
+  "/mypy.ini",
+  "/noxfile.py",
+  "bin/*",
+  "examples/*",
+  "src/*",
+  "tests/*",
+]
+
 [tool.hatch.metadata.hooks.fancy-pypi-readme]
 content-type = "text/markdown"