Add submission # 6873

#6873

Author: ArduinoBot

registry.txt

@@ -8341,3 +8341,4 @@ https://github.com/alexghrrsn/Ecowitt-Gateway-Parser.git|Contributed|Ecowitt-GW1
 https://github.com/felias-fogg/progmem_far.git|Contributed|progmem_far
 https://github.com/harishfaqot/TF-LC02.git|Contributed|TF-LC02
 https://github.com/harishfaqot/Atlas_EC.git|Contributed|Atlas_EC
+https://github.com/derdoktor667/FlyskyIBUS.git|Contributed|FlyskyIBUS