Add Case-Insensitive History Search and Subword Movement to ClickHouse Client

Why it matters

This feature enhances the clickhouse-client command-line interface by allowing users to perform case-insensitive searches through their command history and to navigate text by subwords. It improves usability and efficiency when recalling previous commands and editing queries.

How to use it

Users can utilize the new case-insensitive history search and subword movement features directly within clickhouse-client during interactive sessions. These enhancements are enabled by default upon updating to the version including this feature; no additional configuration is required.