ulo-storage-endpoint: move ULO to seperate ontology namespace

src/ulo-storage-endpoint/src/main/java/info/mathhub/uloapi/cli/Main.java

 package info.mathhub.uloapi.cli;
 
 import info.mathhub.uloapi.query.GraphDB;
-import info.mathhub.uloapi.query.ULO;
+import info.mathhub.uloapi.ontology.ULO;
 import org.eclipse.rdf4j.model.IRI;
 import org.eclipse.rdf4j.model.Statement;
 import org.eclipse.rdf4j.repository.RepositoryResult;

src/ulo-storage-endpoint/src/main/java/info/mathhub/uloapi/query/ULO.java → src/ulo-storage-endpoint/src/main/java/info/mathhub/uloapi/ontology/ULO.java

-package info.mathhub.uloapi.query;
+package info.mathhub.uloapi.ontology;
 
 import org.eclipse.rdf4j.model.IRI;
 import org.eclipse.rdf4j.model.ValueFactory;

src/ulo-storage-endpoint/src/main/java/info/mathhub/uloapi/query/Query.java

 package info.mathhub.uloapi.query;
 
 import info.mathhub.uloapi.config.Config;
+import info.mathhub.uloapi.ontology.ULO;
 import org.eclipse.rdf4j.model.Statement;
 import org.eclipse.rdf4j.repository.RepositoryResult;