Revert "Provide a generic submodel service component (eclipse-basyx#446)" (eclipse-basyx#640)

This reverts commit 3ff57d0.

Author: aaronzi

basyx.submodelrepository/basyx.submodelrepository-backend/src/main/java/org/eclipse/digitaltwin/basyx/submodelrepository/backend/CrudSubmodelRepository.java

@@ -26,6 +26,7 @@
 package org.eclipse.digitaltwin.basyx.submodelrepository.backend;
 
 import java.io.InputStream;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.List;
@@ -35,8 +36,10 @@
 import java.util.stream.StreamSupport;
 
 import org.eclipse.digitaltwin.aas4j.v3.model.OperationVariable;
+import org.eclipse.digitaltwin.aas4j.v3.model.Reference;
 import org.eclipse.digitaltwin.aas4j.v3.model.Submodel;
 import org.eclipse.digitaltwin.aas4j.v3.model.SubmodelElement;
+import org.eclipse.digitaltwin.basyx.client.internal.ApiException;
 import org.eclipse.digitaltwin.basyx.core.exceptions.CollidingIdentifierException;
 import org.eclipse.digitaltwin.basyx.core.exceptions.ElementDoesNotExistException;
 import org.eclipse.digitaltwin.basyx.core.exceptions.ElementNotAFileException;
@@ -46,6 +49,7 @@
 import org.eclipse.digitaltwin.basyx.core.pagination.CursorResult;
 import org.eclipse.digitaltwin.basyx.core.pagination.PaginationInfo;
 import org.eclipse.digitaltwin.basyx.core.pagination.PaginationSupport;
+import org.eclipse.digitaltwin.basyx.http.Base64UrlEncoder;
 import org.eclipse.digitaltwin.basyx.serialization.SubmodelMetadataUtil;
 import org.eclipse.digitaltwin.basyx.submodelrepository.SubmodelRepository;
 import org.eclipse.digitaltwin.basyx.submodelservice.SubmodelService;
@@ -55,6 +59,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.data.repository.CrudRepository;
+import org.springframework.http.HttpStatus;
 
 /**
  * Default Implementation for the {@link SubmodelRepository} based on Spring