Updated search_datasets tool using gemini search + the default

[SubhadityaMukherjee]

• Redefined the search_datasts tool while using gemini to also do a "google search" using gemini and not just look at the dataset index when doing a search.
  This can be tested using "eclair-client --tool search-datasets --query "tree cover datasets" --use-gemini" after running eclair-server and gemini-cli (following the current documentation)

• Also updated the required packages so we can use 'uv' as the venv/package manager.

[github-actions]

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[SubhadityaMukherjee]

Ah I just filled the form that was required :)

[SubhadityaMukherjee]

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[SubhadityaMukherjee]

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[SubhadityaMukherjee]

@joaquinvanschoren can you check if this works now and if it can be merged? If so, I can proceed with the other parts of the project as we discussed

[luisoala]

@SubhadityaMukherjee just for my understanding: does the gemini search hinge on using gemini api as backend llm? or can any llm backend be used?

[SubhadityaMukherjee]

Hey I wanted to initially start with gemini, and if it proved to be useful, then add options for anything else. The perks of using gemini itself was that you wouldnt necessarily run into search limits :)