This PR adds first-class `nn.ParameterList` and `nn.ParameterDict`
containers to the Relax frontend.
These containers provide PyTorch-like list/dict registration for raw
`nn.Parameter` objects while preserving Relax frontend semantics: values
must be explicit `nn.Parameter` instances, with no automatic
tensor-to-parameter conversion.
### Changes
- Add public `nn.ParameterList` and `nn.ParameterDict` exports.
- Support stable parameter names in traversal:
- `params.0`, `params.1`
- `params.foo`, `params.bar`
- Integrate the new containers with:
- `named_parameters()`
- `parameters()`
- `state_dict()`
- `load_state_dict()`
- `to(dtype=...)`
- `export_tvm()`
- `nn.Mutator`
- Add focused tests for basic container behavior, type validation,
nested traversal, export parameter names, state loading, dtype
conversion, and mutator naming.
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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Masahiro Hiramori
86794e7d91