Feat/ai search

[iperdomo]

• New endpoint /api/search where q uses a natural language query to search resources
• Using OpenAI ChatGPT model we use a text2sql approach
• Since we want a fast conversion to sql, we expose a simplified version of the database schema via a database view (v_resources)
• A new read-only connection pool was introduced to execute the query generated by LLM
• Only select * from v_resources where [...] query is allowed. No need for joins with any other table
• We also query datasets that are defined in another system (Strapi based). We use postgres_fdw to access the relevant tables.
  • Note: We could have used the same database and just a different database schema, but Strapi does not support that method)