Feat (export/wave): support wave export

[Giuseppe5]

Reason for this PR

Similar to inference mode, we enter a context manager to switch to Wave kernels

Some open issue:

• Having their own pre-quantized weight, we risk model duplication. To avoid this we remove the weights from the original layer
• The current interface of wave QuantLayers could be revised
• Integration with more quantization algorithms will require careful sync to avoid infinite combinations
• Another option could be to leverage torch_function within QuantTensor, but it will clash with some of the options above

Changes Made in this PR

Testing Summary

Risk Highlight

• This PR includes code from another work (please detail).
• This PR contains API-breaking changes.
• This PR depends on work in another PR (please provide links/details).
• This PR introduces new dependencies (please detail).
• There are coverage gaps not covered by tests.
• Documentation updates required in subsequent PR.

Checklist

• Code comments added to any hard-to-understand areas, if applicable.
• Changes generate no new warnings.
• Updated any relevant tests, if applicable.
• No conflicts with destination dev branch.
• I reviewed my own code changes.
• Initial CI/CD passing.
• 1+ reviews given, and any review issues addressed and approved.
• Post-review full CI/CD passing.