add setup.py for paddle cxx_op

Author: HydrogenSulfate

source/op/pd/setup.py

@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: LGPL-3.0-or-later
+import os
+
+
+def main():
+    current_dir = os.path.abspath(os.getcwd())
+    script_dir = os.path.abspath(os.path.dirname(__file__))
+
+    if current_dir != script_dir:
+        raise RuntimeError(
+            f"[ERROR] Please run this script under directory: `{script_dir}`"
+        )
+
+    from paddle.utils.cpp_extension import (
+        CppExtension,
+        setup,
+    )
+
+    setup(name="deepmd_op_pd", ext_modules=CppExtension(sources=["comm.cc"]))
+
+
+if __name__ == "__main__":
+    main()