Update repositories.txt (#6916)

Add Arduino library for L9110 motor driver.

Author: RobTillaart

repositories.txt

@@ -5817,6 +5817,7 @@ https://github.com/RobTillaart/Interval
 https://github.com/RobTillaart/Kelvin2RGB
 https://github.com/RobTillaart/KT0803
 https://github.com/RobTillaart/Kurtosis
+https://github.com/RobTillaart/L9110
 https://github.com/RobTillaart/LineFormatter
 https://github.com/RobTillaart/Logistic
 https://github.com/RobTillaart/LTC2485