(experimental) loop2 to get fresh audio just before drawing

* introducing usermod::loop2() - runs just before strip.service()
--> expecting to reduce lagging between audio and visual to an absolute minimum.

usermods/audioreactive/audio_reactive.h

@@ -2352,6 +2352,11 @@ class AudioReactive : public Usermod {
 #endif
     }
 
+#if defined(_MoonModules_WLED_) && defined(WLEDMM_FASTPATH)
+    void loop2(void) { 
+      loop();
+    }
+#endif
 
     bool getUMData(um_data_t **data)
     {