feat: keyword search conda-store packages

[gabalafou]

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[github-actions[bot]]

:point_left: Launch a binder notebook on the branch Quansight/gator/filter-packages-conda-store

[gabalafou]

TODO:

• [ ] Fix render conflict between infinite scroll and search results
• [ ] If new search is requested while an existing search request is pending, cancel the pending request
• [ ] Make decision for this PR: how to submit search query? debounce? enter key only? enter key + search button? long debounce + enter + button?