Add submission # 7306

#7306

Author: ArduinoBot

registry.txt

@@ -8620,3 +8620,4 @@ https://github.com/m5stack/M5Unit-RF433.git|Contributed|M5Unit-RF433
 https://github.com/Faizyee/DZ_HTTP.git|Contributed|DZ_HTTP
 https://github.com/TamsinRose/SimpleCounter.git|Contributed|SimpleCounter
 https://github.com/snappyxo/microblue-arduino.git|Contributed|MicroBlue
+https://github.com/egnor/ok_micro_dock.git|Contributed|OK Micro Dock