Add classpath scan for sync listeners

pom.xml

...bias/playpad/server/server/project/sync/SyncListener.java

...aypad/server/server/project/sync/ProjectSyncHandler.scala

...rver/project/sync/listener/design/DesignAddListener.scala

...r/project/sync/listener/design/DesignUpdateListener.scala

...ver/server/project/sync/listener/pad/PadAddListener.scala

...r/server/project/sync/listener/pad/PadClearListener.scala

.../server/project/sync/listener/pad/PadRemoveListener.scala

.../server/project/sync/listener/pad/PadUpdateListener.scala

...t/sync/listener/pad/settings/PadSettingsAddListener.scala

...ync/listener/pad/settings/PadSettingsUpdateListener.scala

...r/server/project/sync/listener/page/PageAddListener.scala

...erver/project/sync/listener/page/PageRemoveListener.scala

...erver/project/sync/listener/page/PageUpdateListener.scala

...r/server/project/sync/listener/path/PathAddListener.scala

...erver/project/sync/listener/path/PathRemoveListener.scala

...er/project/sync/listener/project/ProjectAddListener.scala

...project/sync/listener/project/ProjectRemoveListener.scala

...project/sync/listener/project/ProjectUpdateListener.scala