* [PT FE]: support nested inputs in example_inputs and arg dicts with different argtypes
* accept hande lists as inputs
* Update tools/ovc/openvino/tools/ovc/moc_frontend/pytorch_frontend_utils.py
* update tests and add comments in code
* fix for custom types in annotations and duplicate in mo
* Update tools/mo/openvino/tools/mo/moc_frontend/pytorch_frontend_utils.py