feat: NR-346401 adding new confluent cloud kafka topic entity

[dsankaraganti]

Relevant information

1. Adding new entity type for confluent cloud topic
2. Changing the existing rule in confluent cloud cluster entity to not include topic telemetry data
3. Changes to golden signals for Confluent cloud cluster entity

Checklist

• I've read the guidelines and understand the acceptance criteria.
• The value of the attribute marked as identifier will be unique and valid.
• I've confirmed that my entity type wasn't already defined. If it is I'm providing an explanation above.

[dsankaraganti]

I am using compositeIdentifier, name as mentioned below. Please let me know if this is correct usage

compositeIdentifier:
      separator: ":"
      attributes:
        - kafka_id
        - topic
    name: kafka.cluster_name || ":" || topic
    encodeIdentifierInGUID: true