topicmappr: Add authentication support for Kafka connection

[St0rmPetrel]

Currently, topicmappr only supports connecting to Kafka using bootstrap servers without authentication.

This issue proposes adding support for authentication parameters, including:

• kafka-ssl-ca-location
• kafka-security-protocol
• kafka-sasl-mechanism
• kafka-sasl-username
• kafka-sasl-password

By introducing a new helper function newKafkaAdminClient, these parameters are properly passed to the Kafka client, allowing topicmappr to work with secured Kafka clusters.