Add submission # 5294

#5294

Author: ArduinoBot

registry.txt

@@ -7528,3 +7528,4 @@ https://github.com/chrmlinux/spreLgfxTouch.git|Contributed|spreLgfxTouch
 https://github.com/quarkifii/quark-db-arduino.git|Contributed|QuarkDB
 https://github.com/EnergizeLab/ServoSDK-Arduino.git|Contributed|Energize Lab Servo
 https://github.com/PaulStoffregen/WS2812Capture.git|Contributed|WS2812Capture
+https://github.com/Naguissa/uMessagesBrokerLib.git|Contributed|uMessagesBrokerLib