add search

[isaacbmiller]

📝 Changes Description

This MR/PR contains the following changes:
...

✅ Contributor Checklist

• [] Pre-Commit checks are passing (locally and remotely)
• [] Title of your PR / MR corresponds to the required format
• [] Commit message follows required format {label}(dspy): {message}

⚠️ Warnings

Anything we should be aware of ?

[isaacbmiller]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• add search #4 👈 (View in Graphite)
• add frontend for search #3
• add server API #2
• main

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