MLX in C++ example (#1736)

* MLX in C++ example

* nits

* fix docs

python/mlx/__main__.py

@@ -0,0 +1,27 @@
+import argparse
+
+
+def main() -> None:
+    from mlx.core import __version__
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--version",
+        action="version",
+        version=__version__,
+        help="Print the version number.",
+    )
+    parser.add_argument(
+        "--cmake-dir",
+        action="store_true",
+        help="Print the path to the MLX CMake module directory.",
+    )
+    args = parser.parse_args()
+    if args.cmake_dir:
+        from pathlib import Path
+
+        print(Path(__file__).parent)
+
+
+if __name__ == "__main__":
+    main()