Move benchmarks to dedicated directory

.gitlab-ci.yml

benchmarks/.gitlab-ci.yml

...n-kafkastreams-commons/.settings/org.eclipse.jdt.ui.prefs

...eams-commons/.settings/qa.eclipse.plugin.checkstyle.prefs

...afkastreams-commons/.settings/qa.eclipse.plugin.pmd.prefs

benchmarks/application-kafkastreams-commons/build.gradle

...va/theodolite/commons/kafkastreams/ConfigurationKeys.java

.../theodolite/commons/kafkastreams/KafkaStreamsBuilder.java

benchmarks/build.gradle

benchmarks/config/README.md

benchmarks/config/checkstyle-suppression.xml

benchmarks/config/checkstyle.xml

benchmarks/config/eclipse-cleanup.xml

benchmarks/config/eclipse-formatter.xml

benchmarks/config/eclipse-import-order.importorder

benchmarks/config/pmd.xml

benchmarks/config/spotbugs-exclude-filter.xml

benchmarks/gradle/wrapper/gradle-wrapper.jar

benchmarks/gradle/wrapper/gradle-wrapper.properties

benchmarks/gradlew