[Unity] Implement relax.Function.bind_params

[Lunderberg]

Similar to relax.Function.bind_symbolic_vars, implemented in #15509, this commit introduces relax.Function.bind_params to allow Relax parameters to be manipulated on a per-function basis. This utility function and the existing BindParams transform both use the same underlying implementation.

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• cc @quic-sanirudh _{See #10317 for details}

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[Lunderberg]

@sunggg This is a follow-up to the BindSymbolicVars commit we made a few weeks ago. Since BindSymbolicVars and BindParams are so similar, I wanted to have the same functionality for both.

[sunggg]

LGTM! Thank you @Lunderberg.
Just one basic question, what would be the real use-case for this pass? Is this for multi-gpu?

[Lunderberg]

At the moment, this would primarily be to write a single Relax function, then manually manipulate it into a specialized form. For example, writing an attention function that accepts a boolean filter tensor, then using BindParams to make a sibling function that replaces it with a constant tensor which o Lu contains True.

In the past, this would have been used to statically bind model parameters into an end-to-end model. However, since that requires the compiling machine to have sufficient RAM, it isn’t as flexible as the LiftTransformParams.

[csullivan]

Thanks @Lunderberg and @sunggg! This is merged.