feat: Extract generic type for KafkaListeners in batch mode (#89)

* feat: Extract generic type for KafkaListeners in batch mode

The KafkaPayloadTypeExtractor contains the logic to extract the payload type,
which previously was part of ClassLevelKafkaListenerScanner and MethodLevelKafkaListenerScanner.

If the parameter is of type List<?>, reflection is used to extract the underlying type.

To demo it, one listener in ExampleConsumer is updated to use batch mode.

* chore: Fix for batch listener asyncapi.json

* chore: Remove unused ReflectionUtils

* chore: Move OperationData scanner code to AbstractOperationDataScanner

* chore: Use SpringPayloadAnnotationTypeExtractor also in amqp

* chore: Catch all exceptions in getPayloadParameterClass

* fix: Use sorted channels

Fixes nondeterministic (HashMap) ordering when channels for the same topic are merged

* chore: Extract duplicate code to KafkaListenerUtil

* chore: Split scanner package by annotation and operationData

* Fix test after rebase

Author: timonback

springwolf-core/build.gradle

@@ -25,6 +25,7 @@ dependencies {
 
     implementation 'org.springframework:spring-web'
     implementation 'org.springframework:spring-context'
+    implementation 'org.springframework:spring-messaging'
     implementation 'org.springframework.boot:spring-boot-autoconfigure'
 
     implementation 'com.google.guava:guava:31.1-jre'