added listRunning to service

src/kernel/service/ServiceManager.hx

@@ -120,4 +120,12 @@ class ServiceManager {
         Log.info('Service ${name} stopped');
         return Success(Noise);
     }
+
+    public function listRunning(): Array<String> {
+        var running = [];
+        for (name in this.services.keys()){
+            running.push(name);
+        }
+        return running;
+    }
 }