KAFKA-16263 : Add Kafka Streams docs about available listeners/callback

[samarth-ksolves]

This PR updated the running-app.html to:

1. Add missing documentation for Kafka Streams listeners and callbacks.
2. Current docs do not explain or list the available listeners, making
   it hard for developers (especially beginners) to use them.
3. Introduce a new section in Kafka Streams docs covering all supported
   listeners/callbacks like uncaught-exception-handler,
   state-restore-listener, state-listener, etc.
4. Provide short explanations and practical use cases for each
   listener/callback.

[mjsax]

Suggested change

	<b>UncaughtExceptionHandler</b><br/>
	<b>StreamsUncaughtExceptionHandler:</b><br/>

[mjsax]

Suggested change

	<b>State Listener</b><br/>
	<b>State Listener:</b><br/>

[mjsax]

Suggested change

	<b>Global State Restore Listener</b><br/>
	<b>Global State Restore Listener:</b><br/>

[mjsax]

Suggested change

	<b>ProductionExceptionHandler</b> and <b>DeserializationExceptionHandler</b><br/>
	<b>ProductionExceptionHandler</b> and <b>DeserializationExceptionHandler</b>:<br/>

[mjsax]

This one is not supported by Kafka Streams, but only by the KafkaConsumer, as the text actually says. Don't think it belongs into the KS part of the docs.

[mjsax]

Suggested change

	// Handle uncaught exceptions
	// Handle uncaught exceptions

[mjsax]

This applies to all lines of the code example. To avoid weird formatting, we need to remove all these trailing spaces, otherwise they are rendered in the docs, and instead of this:

Example usage of exception and state restore listeners:

// Handle uncaught exceptions
...

we would get

Example usage of exception and state restore listeners:

                    // Handle uncaught exceptions
                    ...

What is rather weird.

[ezhou413]

Hi @samarth-ksolves, are you still working on this? I am working on something similar in #21000, and think your changes would be a good addition.