Support callable search space for optuna in suggestion

[DeukWoongWoo]

/kind feature

Describe the solution you'd like
[A clear and concise description of what you want to happen.]
Please support callable search space for optuna in suggestion like ray tune.
This part of ray.
https://github.com/ray-project/ray/blob/ba0309536f14248b0d97ddadc3982b53aba0cfd7/python/ray/tune/search/optuna/optuna_search.py#L486-L493

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

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[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[tenzen-y]

/lifecycle frozen