Sqlite-utils-ask

- New `sqlite-utils ask-files data.csv 'count the rows'` command for answering questions against CSV and JSON data. 10
- Output defaults to Markdown - use `--json` to get JSON instead. 5
- `sqlite-utils ask -e/--examples` option for sending example values for each column to the LLM for potentially better results. 8

- Initial alpha release. [1](https://github.com/simonw/sqlite-utils-ask/issues/1)