Introduce no commit option

[acktsap]

It would be convenient to add no-commit option to CommitMode

parallel-consumer/parallel-consumer-core/src/main/java/io/confluent/parallelconsumer/ParallelConsumerOptions.java

Lines 215 to 228 in 513d9d4

	PERIODIC_TRANSACTIONAL_PRODUCER,
	/**
	* Periodically synchronous commits with the Consumer. Much faster than
	* {@link #PERIODIC_TRANSACTIONAL_PRODUCER}. Slower but potentially fewer duplicates than
	* {@link #PERIODIC_CONSUMER_ASYNCHRONOUS} upon replay.
	*/
	PERIODIC_CONSUMER_SYNC,
	/**
	* Periodically commits offsets asynchronously. The fastest option, under normal conditions will have few or no
	* duplicates. Under failure recovery may have more duplicates than {@link #PERIODIC_CONSUMER_SYNC}.
	*/
	PERIODIC_CONSUMER_ASYNCHRONOUS

It can be used in several ways (e.g. in testing)

[rameetchandok]

Yes, it would be very helpful for scenarios where there is no requirement of GroupId management where offsets are maintained in an external system and parallel consumption from topic partitions is required.