add decoder for RTTrPL

src/decoders/index.ts

@@ -1,5 +1,6 @@
 import ChannelBlock from './lighting/channel-block';
 import LightingOutput from './lighting/lighting-output';
+import RTTrPL from './lighting/rttrpl';
 import Spot from './lighting/spot';
 import Universe from './lighting/universe';
 import CentroidAccelVelocity from './motion/centroid-accel-velocity';
@@ -17,6 +18,7 @@ import RTTrPHeader from './rttrp-header';
 export const Decoders = {
   RTTrPHeader,
   RTTrPM,
+  RTTrPL,
   Trackable,
   CentroidPosition,
   CentroidAccelVelocity,