[AB-70] moving image generation functionality to separate image generation module

removing doge image generation from default base
split rest-api into separate modules (base and extensions)

abstracto-application/abstracto-modules/entertainment/pom.xml

@@ -23,9 +23,4 @@
         </dependency>
     </dependencies>
 
-    <properties>
-        <maven.compiler.source>8</maven.compiler.source>
-        <maven.compiler.target>8</maven.compiler.target>
-    </properties>
-
 </project>