refactored migrationService

.../src-gen/de/sample/onlineschuhdemo/BusinessRuleTasks.java

...neSchuhDemo/src-gen/de/sample/onlineschuhdemo/Events.java

...e/sample/onlineschuhdemo/ExternalServiceMockProvider.java

...SchuhDemo/src-gen/de/sample/onlineschuhdemo/Gateways.java

...uhDemo/src-gen/de/sample/onlineschuhdemo/ManualTasks.java

...uhDemo/src-gen/de/sample/onlineschuhdemo/ScriptTasks.java

...hDemo/src-gen/de/sample/onlineschuhdemo/ServiceTasks.java

...chuhDemo/src-gen/de/sample/onlineschuhdemo/TestUtils.java

...emo/src-gen/de/sample/onlineschuhdemo/Testcollection.java

...chuhDemo/src-gen/de/sample/onlineschuhdemo/UserTasks.java

OnlineSchuhDemo/src/main/resources/backup/1638731255163.zip

OnlineSchuhDemo/src/main/resources/backup/1638732106621.zip

...SchuhDemo/src/main/resources/schuh_vernichtung_spende.dmn

...ava/de/sample/onlineschuhdemo/Testcollection.bpmn-testgen

OnlineSchuhDemo/testgen.json

...ster/masterthesis/Testgenerator/migration/ActionType.java

...asterthesis/Testgenerator/migration/MigrationService.java

...s/Testgenerator/rest/service/change/ChangeController.java

.../fhmuenster/masterthesis/Testgenerator/yaml/Activity.java

...hmuenster/masterthesis/Testgenerator/yaml/ChangeType.java