OZG-1701 parse json, map to eingang data

...e/itvsh/kop/eingangsadapter/common/formdata/FormData.java

...itvsh/kop/eingangsadapter/common/formdata/FormHeader.java

formsolutions-adapter/pom.xml

.../itvsh/kop/eingangsadapter/formsolutions/EingangData.java

.../kop/eingangsadapter/formsolutions/EingangDataMapper.java

...h/kop/eingangsadapter/formsolutions/SendFormEndpoint.java

.../eingangsadapter/formsolutions/EingangDataMapperTest.java

...eingangsadapter/formsolutions/EingangDataTestFactory.java

...eingangsadapter/formsolutions/FsComponentTestFactory.java

.../eingangsadapter/formsolutions/FsFormDataTestFactory.java

...kop/eingangsadapter/formsolutions/FsPanelTestFactory.java

...eingangsadapter/formsolutions/SendFormEndpointITCase.java

...lutions-adapter/src/test/resources/application-itcase.yml

pom.xml