Looking for having headers support in kafka input and output plugin

[yjagdale]

#8334 - got auto closed. Is your feature request related to a problem? Please describe. We are looking at having a few fields as part of Kafka message while sending a message to Kafka and receiving a message from kafka.

Describe the solution you'd like Looking for some option to read kafka headers and get in some variable by default https://vector.dev/docs/reference/configuration/sources/kafka/#headers_key something like this.

Describe alternatives you've considered All the log processor like logstash/vector.dev support this.

Additional context This will be a good feature to check and make decision or few operation without opening actual kafka message.