Utility clickhouse-copier moved to separate GitHub repository

Utility clickhouse-copier is moved to a separate repository on GitHub: https://github.com/ClickHouse/copier. It is no longer included in the bundle but is still available as a separate download. This closes: #60734 This closes: #60540 This closes: #60250 This closes: #52917 This closes: #51140 This closes: #47517 This closes: #47189 This closes: #46598 This closes: #40257 This closes: #36504 This closes: #35485 This closes: #33702 This closes: #26702.