Add tensor table in ModelDef and use it for jit script serialization and deserializat...

Add tensor table in ModelDef and use it for jit script serialization and deserialization (#13861)

Summary:
As we discussed, the tensors in the torch script will be associated with the tensor data in the serialized file. So let's add a table of tensor (actually it's a repeated TensorProto filed) in the ModelDef. TensorProto.name will be the id.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/13861

Reviewed By: dzhulgakov

Differential Revision: D13036940

Pulled By: zrphercule

fbshipit-source-id: ecb91b062ac4bc26af2a8d6d12c91d5614efd559