Connection pool config

[chernser]

Summary

Added new options:

• com.clickhouse.client.config.ClickHouseClientOption#CONNECTION_TTL - sets maximum connection time to leave. Overrides keep-alive from a server
• com.clickhouse.client.http.config.ClickHouseHttpOption#KEEP_ALIVE_TIMEOUT - sets keep alive for connections. Overrides keep-alive from a server
• com.clickhouse.client.http.config.ClickHouseHttpOption#CONNECTION_REUSE_STRATEGY - sets strategy of connection reuse. By default LIFO is used so most fresh connections are used. Another value is "FIFO" that will make connection pool to use connections in fair way.

Closes #1770

Checklist

Delete items not relevant to your PR:

• 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

[mzitnik]

Can you explain why setting into MAX_VALUE

[chernser]

if we have different routes then it will override max connection per route
previous version would work with only one route well

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
85.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud