Unify benchmark implementations

Includes the following changes:

• Unify logging (#406 (closed), 092cc3c0) -> !308 (merged)
• Naming of configuration options
• Kafka commit interval (#405 (closed)) -> !305 (merged)
• Kafka offset reset (earliest) -> 3ce158ec
• Window sizes for UC2, UC3 and UC4 (!306 (merged), !307 (merged), moved to #412)
• Output format (e.g. Stats) -> cda97d49, 9a64d3bd
• Triggers in UC3 -> cda97d49, 092cc3c0
• Default Helm/Docker Compose configurations (86851112 and others)