Store constraints and example inputs in the graph module as metadata in export (#99961)
Metadata to store in the GraphModule:
- input shape constraints
- example inputs
- other inline constraints
The saved constraints (in mem) will be used directly after export to convert constraints to runtime assertion which is a separate pass after export.
The requirement of saved constraints:
1. Be able to locate where the constraints is from
2. Should not break the exported graph module serialization.
Examples of saved constraints
```
input_shape_constraints:
{'t_id': 140266058179792, 'dim': 0, 'min': 6, 'max': oo}
{'t_id': 140266058179792, 'dim': 0, 'min': 2, 'max': 10}
inline_constraints:
i1: ValueRanges(lower=2, upper=5)
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99961
Approved by: https://github.com/tugsbayasgalan
