Feedback on /feature/query: Tutorial about HyperLogLog and beyond

### Documentation feedback

- Page title: Advanced Querying
- Page URL: https://cratedb.com/docs/guide/feature/query/index.html
- Source: https://github.com/crate/cratedb-guide/blob/main/docs/feature/query/index.md

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This article/tutorial could be a nice enrichment for that section.

- https://cratedb.com/blog/time-series-cratedb-cloud-sql-examples

Start with docs/feature/query/index.md, the source for the Advanced Querying page, and read the linked time-series CrateDB Cloud SQL examples. Identify the relevant material for enriching that tutorial, then confirm the page incorporates the selected content and remains consistent with the documentation structure.

Written by the indexing model from the issue text.