OZG-1517 use formDataMaper from pluto-utils

goofy-server/pom.xml

...itvsh/goofy/common/errorhandling/ExceptionController.java

...main/java/de/itvsh/goofy/vorgang/AntragstellerMapper.java

...r/src/main/java/de/itvsh/goofy/vorgang/EingangMapper.java

.../main/java/de/itvsh/goofy/vorgang/GrpcFormDataMapper.java

.../de/itvsh/goofy/common/command/CommandBodyMapperTest.java

...tvsh/goofy/common/errorhandling/ExceptionTestFactory.java

.../java/de/itvsh/goofy/vorgang/AntragstellerMapperTest.java

...c/test/java/de/itvsh/goofy/vorgang/EingangMapperTest.java

...t/java/de/itvsh/goofy/vorgang/GrpcFormDataMapperTest.java