add guest user functionality

backend/src/app.module.ts

@@ -10,6 +10,7 @@ import { DemoManagerModule } from './managers/demo/demomanager.module';
 import { AuthModule } from './routes/api/auth/auth.module';
 import { PrefModule } from './routes/api/pref/pref.module';
 import { ImageModule } from './routes/image/imageroute.module';
+import { ExperimentModule } from './routes/api/experiment/experiment.module';
 
 @Module({
   imports: [
@@ -27,6 +28,7 @@ import { ImageModule } from './routes/image/imageroute.module';
     DemoManagerModule,
     PrefModule,
     PicsurLoggerModule,
+    ExperimentModule,
   ],
 })
 export class AppModule {}