GH-1352: ConsumerCustomizer Improvements
- pass in the listener id, if available
- narrow to a specific interface to aid Boot auto configuration
- add null check

* Apply Suggestion to add @FuntionalInterface

GH-1352: ConsumerCustomizer Improvements
- pass in the listener id, if available
- narrow to a specific interface to aid Boot auto configuration
- add null check

* Apply Suggestion to add @FuntionalInterface

GH-615: Fix new Sonar Issue

GH-1876: Fix new Sonar Issues

GH-615: Fix new Sonar Issue

GH-1876: Fix new Sonar Issues

GH-1352: Fix Possible NPEs

GH-615: Add DefaultErrorHandler
* GH-615: Add DefaultErrorHandler

See https://github.com/spring-projects/spring-kafka/issues/615

Replaces legacy `SeekToCurrentErrorHandler` and `RecoveringBatchErrorHandler`.
These were the previous defaults when no transaction manager is present.
They will be deprecated in a future PR.

- refactor common code into superclass/utilities
- copy existing test case classes, changing the error handler types

* Add CommonDelegatingErrorHandler

GH-1876: Seek To Timestamp with Manual Assignment
Resolves https://github.com/spring-projects/spring-kafka/issues/1876

Support initial seek to timestamp when manually assigning partitions.

**cherry-pick to 2.7.x**

GH-1352: Fix Possible NPEs

GH-615: Add DefaultErrorHandler
* GH-615: Add DefaultErrorHandler

See https://github.com/spring-projects/spring-kafka/issues/615

Replaces legacy `SeekToCurrentErrorHandler` and `RecoveringBatchErrorHandler`.
These were the previous defaults when no transaction manager is present.
They will be deprecated in a future PR.

- refactor common code into superclass/utilities
- copy existing test case classes, changing the error handler types

* Add CommonDelegatingErrorHandler

GH-1876: Seek To Timestamp with Manual Assignment
Resolves https://github.com/spring-projects/spring-kafka/issues/1876

Support initial seek to timestamp when manually assigning partitions.

**cherry-pick to 2.7.x**

GH-1876: Fix new Sonar Issues

GH-615: Add CommonLoggingErrorHandler
See https://github.com/spring-projects/spring-kafka/issues/615

GH-1870: Fix Doc for Programmatic JSON Config
Resolves https://github.com/spring-projects/spring-kafka/issues/1870

Also remove references to `KafkaProperties`, which the Boot team doesn't consider
a public API.

GH-615: Error Handler Evolution Part 1
Flatten `GenericErrorHandler` into a single interface.
Create an adapter for legacy error handlers.

See https://github.com/spring-projects/spring-kafka/issues/615

Sonar Fixes

Sonar Fixes

GH-1866: Fix Pause/Resume
Resolves https://github.com/spring-projects/spring-kafka/issues/1866

The new retryable topic feature pauses/resumes individual partitions.

This broke normal container pause/resume by incorrectly resuming partitions
that were paused by the container pause operation.

Similarly, if individual partitions were paused and then the container was
paused and resumed, the container resumed all partitions.

Decouple the functionality to prevent this cross-talk.

Do not resume any individually paused partitions when the container is in a paused state.
Do not resume any individually paused partitions when the container is resumed.

Also

Use a `ConcurrentHashMap.newKeySet()` instead of synchronization on partition pause requests.
Use `getAssignedPartitions()` to allow the retry topic feature to work with manual assignments.

Add tests to verify no cross-talk between pausing individual partitions and the container.

* Fix race in test.

GH-1784: Customizing JSON Serializer/Deserializer
Resolves https://github.com/spring-projects/spring-kafka/issues/1784

GH-1352: Fix New Sonar Issues

GH-1352: Spring Integration 5.5 Compatibility
Refactoring to allow Spring Integration 5.5 to be used with both
2.3.x and 2.4.x.

Fix Sonar issues for previous commit

GH-1352: Fix more Sonar issues

GH-615: Fix new Sonar Issue

GH-615: Error Handler Evolution Part 1
Flatten `GenericErrorHandler` into a single interface.
Create an adapter for legacy error handlers.

See https://github.com/spring-projects/spring-kafka/issues/615

Sonar Fixes

GH-1866: Fix Race in Tests

GH-1352: Add Compression Libraries for Tests
For latest client library.

GH-1352: Add Compression Libraries for Tests
For latest client library.

Fix Race in Tests

GH-3584: Support spring-amqp 2.3.x and 2.4.x

GH-3584: Support spring-amqp 2.3.x and 2.4.x

GH-1352: Checkstyle Fix
Generated `equals()`.