Adds toolkit as dependency for Arduino library manager

Author: edspark

library.properties

@@ -6,4 +6,5 @@ sentence=A library to use the SparkFun Qwiic Ultrasonic Distance Sensor
 paragraph=
 category=Sensors
 url=https://github.com/sparkfun/SparkFun_Qwiic_Ultrasonic_Arduino_Library
-architectures=*
+architectures=*
+depends=SparkFun_Toolkit