chore(pom): add unified-ticketing dependency

pom.xml

@@ -63,6 +63,17 @@
             <artifactId>log4j-core</artifactId>
             <version>2.11.2</version>
         </dependency>
+        <dependency>
+            <groupId>de.hftstuttgart</groupId>
+            <artifactId>unified-ticketing</artifactId>
+            <version>0.2.0</version>
+        </dependency>
+        <!-- somehow for unified-ticketing maven downloads a 3.x version, even though 4.9.0 is set on unified-ticketing pom -->
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>4.9.0</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -74,4 +85,11 @@
             </plugin>
         </plugins>
     </build>
+
+    <repositories>
+        <repository>
+            <id>unified-ticketing</id>
+            <url>https://transfer.hft-stuttgart.de/gitlab/api/v4/projects/154/packages/maven</url>
+        </repository>
+    </repositories>
 </project>