added project-config to configure the priority

...s/Testgenerator/rest/service/config/ConfigController.java

...enster/masterthesis/Testgenerator/yaml/MigrationYaml.java

.../fhmuenster/masterthesis/Testgenerator/yaml/Priority.java

Testgenerator/src/main/resources/migration.yaml

...rator-web/testgenerator-web/src/app/app-routing.module.ts

testgenerator-web/testgenerator-web/src/app/app.module.ts

...pp/components/project-config/project-config.component.css

...p/components/project-config/project-config.component.html

...omponents/project-config/project-config.component.spec.ts

...app/components/project-config/project-config.component.ts

...tor-web/src/app/components/project/project.component.html

...web/testgenerator-web/src/app/services/project.service.ts