Add support for edge dialect ops in exir/serde (#106371)
Summary:
Adding support for edge dialect ops in `exir/serde`. This diff does the following:
- Moves the global `serialize_operator/deserialize_operator` implementations in`export/serde/serialize.py` into `GraphModuleSerializer` and `GraphModuleDeserializer`
- Adds implementations of `serialize_operator/deserialize_operator` inside `GraphModuleSerializer` and `GraphModuleDeserializer` in `exir/serde/serialize.py`
Test Plan: CI + Enabled edge dialect ops in `executorch/exir/tests/test_serde.py`
Differential Revision: D47938280
Pull Request resolved: https://github.com/pytorch/pytorch/pull/106371
Approved by: https://github.com/angelayi
