[llvm] [MLIR] [Python] Added plumbing to run stubgen on the mlir._mlir package (PR #179211)

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darker --check --diff -r origin/main...HEAD utils/bazel/llvm-project-overlay/mlir/stubgen_runner.py
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``````````diff
--- stubgen_runner.py	2026-02-02 11:53:40.000000 +0000
+++ stubgen_runner.py	2026-02-02 11:56:01.663121 +0000
@@ -27,12 +27,16 @@
     return module_name
 
 
 def main():
     parser = argparse.ArgumentParser()
-    parser.add_argument("--module", required=True, help="Module name to generate stubs for")
-    parser.add_argument("--deps", required=True, help="Comma-separated .so files to load")
+    parser.add_argument(
+        "--module", required=True, help="Module name to generate stubs for"
+    )
+    parser.add_argument(
+        "--deps", required=True, help="Comma-separated .so files to load"
+    )
     parser.add_argument("-o", "--output", required=True, help="Output directory")
     args = parser.parse_args()
 
     for dep_path in args.deps.split(","):
         load_extension(Path(dep_path).resolve())

``````````

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https://github.com/llvm/llvm-project/pull/179211