Techinc Smart 3m neon strip: restore Scene and Music "effects"

I think the removal of these was a misinterpretation of my previous comment

custom_components/tuya_local/devices/techinc_smart_3m_neon_strip.yaml

@@ -14,6 +14,10 @@ primary_entity:
       mapping:
         - dps_val: colour
           value: "off"
+        - dps_val: scene
+          value: Scene
+        - dps_val: music
+          value: Music
     - id: 22
       name: brightness
       type: integer