Add force on cluster config option

[benjamin-awd]

Summary

Closes https://github.com/ClickHouse/dbt-clickhouse/issues/327

This PR allows users to create relations on a cluster, regardless of their engine or materialization type.

Checklist

Delete items not relevant to your PR:

• [x] 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