Implement Kafka support

[d-Rickyy-b]

Depending on the use case, a user might want to process all the certificates via kafka. Currently the process requires a consumer to actively connect to the server via a websocket, then receives the certificates.

Implementing kafka support enables the tool to be used by corporations internally, without struggling with websockets.

[d-Rickyy-b]

Kafka support coming soon :)

[powermik]

Hi! Trying out a setup with kafka: Any chance that you rebase the kafka branch to the latest main and add compression?