Rearrange use case enumeration in sources

...a/theodolite/uc3/streamprocessing/StatsRecordFactory.java

...java/theodolite/uc3/streamprocessing/TopologyBuilder.java

...eodolite/uc3/streamprocessing/Uc3KafkaStreamsBuilder.java

...cation/src/main/resources/META-INF/application.properties

benchmarks/uc3-workload-generator/Dockerfile

.../java/theodolite/uc3/workloadgenerator/LoadGenerator.java

...hmarks/uc4-application/.settings/org.eclipse.jdt.ui.prefs

benchmarks/uc4-application/Dockerfile

benchmarks/uc4-application/README.md

benchmarks/uc4-application/build.gradle

...n/java/theodolite/uc4/application/AggregationService.java

...odolite/uc4/streamprocessing/ChildParentsTransformer.java

...uc4/streamprocessing/ChildParentsTransformerSupplier.java

...theodolite/uc4/streamprocessing/JointFlatTransformer.java

...te/uc4/streamprocessing/JointFlatTransformerSupplier.java

...a/theodolite/uc4/streamprocessing/JointRecordParents.java

...theodolite/uc4/streamprocessing/OptionalParentsSerde.java

...in/java/theodolite/uc4/streamprocessing/ParentsSerde.java

...ava/theodolite/uc4/streamprocessing/RecordAggregator.java

...java/theodolite/uc4/streamprocessing/SensorParentKey.java