OZG-5156 Make fim mapper more robust. Defaulting instead of throwing

fim-adapter/pom.xml

...n/java/de/ozgcloud/eingang/fim/FimAdapterApplication.java

...src/main/java/de/ozgcloud/eingang/fim/FimBasedMapper.java

.../main/java/de/ozgcloud/eingang/fim/FimDataController.java

.../src/main/java/de/ozgcloud/eingang/fim/FimDataMapper.java

...r/src/main/java/de/ozgcloud/eingang/fim/FimException.java

...pter/src/main/java/de/ozgcloud/eingang/fim/FimScheme.java

...ter/src/main/java/de/ozgcloud/eingang/fim/FimService.java

...ava/de/ozgcloud/eingang/fim/adapter/FimSchemeAdapter.java

...src/test/java/de/ozgcloud/eingang/fim/FimServiceTest.java

.../java/de/ozgcloud/eingang/fim/TestNonStandardAdapter.java