* Update KafkaApplication.java
Added partition offset to the listener so that it can start consuming the messages from the beginning of the topic.
* Revert "Update KafkaApplication.java"
This reverts commit 28801f85174af8bf2d2bb89e1fb39b52c49a6cf0.
* Counting Messages
1. Counting messages from Producer offset
2. Counting messages from Consumer
3. Rest APIs to view the count
* Refactoring
* Adding 3rd programmatic method to count number of messages in Kafka topic
* Removing irrelevant code
* Server port removed