Add functionality to reset the Kafka consumer offset commits for the validator nodes

[ibitec7]

Issue:
There is currently no method to reset the offset commits to the Transactions topic. This is necessary as in case of a fork, the order of transactions and their validation would need to be verified again by reading the Kafka logs.

Solution:
Save the commit state before pooling the transactions to move to a previous checkpoint in case of a failure.

Alternatives Considered:
N/A

Additional Context:
N/A