Features
- #491: Respect iox::column_type::field metadata when
mapping query results into values.- iox::column_type::field::integer: => number
- iox::column_type::field::uinteger: => number
- iox::column_type::field::float: => number
- iox::column_type::field::string: => string
- iox::column_type::field::boolean: => boolean