[client-v2] Initial metrics implementation in client v2 using micrometer

[mzitnik]

Summary

Initial metrics implementation. There is an implementation of 5 metrics built-in into Apache HTTP Client

Closes #1901

Checklist

Delete items not relevant to your PR:

• Closes [client-v2] Metrics for a Connection Pool #1901
• Unit and integration tests covering the common scenarios were added
• A human-readable description of the changes was provided to include in CHANGELOG
• For significant changes, documentation in https://github.com/ClickHouse/clickhouse-docs was updated with further explanations or tutorials

[sonarqubecloud]

Quality Gate failed

Failed conditions
76.7% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud