KAFKA-6945: Add docs about KIP-373 (#12346)
KAFKA-6945: Add docs about KIP-373 (#12346)

Reviewers: Manikumar Reddy
apache/kafka,guozhangwang/kafka,lindong28/kafka,apache/kafka,guozhangwang/kafka,apache/kafka,guozhangwang/kafka,lindong28/kafka,lindong28/kafka,apache/kafka,lindong28/kafka,guozhangwang/kafka