chore: import upstream snapshot with attribution

tests/test_embedded_commit.py

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import vllm
+
+
+def test_embedded_commit_defined():
+    assert hasattr(vllm, "__version__")
+    assert hasattr(vllm, "__version_tuple__")
+    assert vllm.__version__ != "dev"
+    assert vllm.__version_tuple__ != (0, 0, "dev")