[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/pom.xml

@@ -33,6 +33,7 @@
         <module>custom-command</module>
         <module>twitch</module>
         <module>giveaway</module>
+        <module>image-generation</module>
     </modules>
 
 </project>