Added Pybindings for Method.h/cpp

Differential Revision: D77565018

Pull Request resolved: #12158

Author: Conarnar

extension/pybindings/portable_lib.py

@@ -49,6 +49,7 @@
     _reset_profile_results,  # noqa: F401
     _unsafe_reset_threadpool,  # noqa: F401
     BundledModule,  # noqa: F401
+    ExecuTorchMethod,  # noqa: F401
     ExecuTorchModule,  # noqa: F401
     ExecuTorchProgram,  # noqa: F401
     MethodMeta,  # noqa: F401