Feat make smarter

[waziers]

• generation JSON output from Gemini instead of the URL so we can combine the different outputs
• Add jest for testing the generation of the various components of the url. Currently only works with the Cloud Function endpoint
• Split the visualization and filter parameter generation into separate calls to be built and tested separately
• Zero-example filter and visualization generation using the documentation
• Supply the documentation to Gemini in Mardkown
• build the explore URL in JS instead of relying on Gemini (which might hallucinate)
• validate the filters using explicit rules
  • don't include filters for unknown fields
  • don't include filter values that don't validate (they are hallucinations)
• tests for filter value validation

Todo:

• add more test coverage for filter and visualization generation
• include visualization config in final output
• add support for the bigquery backend in test mode by instantiating the looker SDK in jest
• create better URL validation to prevent 404 on the page. The URL should always load, even if it has some mistakes.

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