fix: implement Exception Handling in Kafka Publisher

[sancheet230]

For issue #431

Description
This pull request enhances the PublisherServiceImpl class by incorporating robust exception handling mechanisms during Kafka message publishing. These improvements aim to ensure reliable message delivery and facilitate effective error management within our Kafka producer implementation.

Prior to this update, the PublisherServiceImpl class lacked comprehensive exception handling during message publication. This omission posed risks of unhandled exceptions leading to application instability and potential message loss. Implementing proper exception handling is crucial for maintaining the reliability and resilience of the Kafka producer.

By integrating these exception handling strategies, the Kafka producer's resilience and reliability are significantly enhanced. These modifications ensure that message delivery failures are appropriately managed, thereby reducing the risk of data loss and improving overall system stability.

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[sancheet230]

@Tenischev @derberg @asyncapi-bot-eve Can you please review these changes

[sancheet230]

@asyncapi-bot @asyncapi-bot-eve Can you check this PR out

[Tenischev]

Hi @sancheet230
I agree that implementation example could be improved, but please keep in mind that this repository provides the template that should generate code based on provided AsynAPI documentation.
Most of all my review comments related to the changes of template names and parameters to the hardcoded.
Please run tests and adjust for your changes.

[sancheet230]

@Tenischev Replaced deprecated ListenableFutureCallback with CompletableFuture, improved async handling, added proper exception handling for sync sends, and ensured template-driven dynamic method generation

[sancheet230]

@Tenischev I have done the changes PTAL

[Tenischev]

When you finish with update of the PublisherService, please run and update tests

[sancheet230]

@Tenischev done all the asked changes and also updated tests snapshots and all tests are passing now

[sancheet230]

@Tenischev everything passing now you can review this

[sancheet230]

@Tenischev PTAL