Add existing code: Power consumption test cases and Semaphore power scheduler skeleton

example/advanced/Power_Measurements/Motors_Full/Motors_Full.ino

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+#include "Dezibot.h"
+
+Dezibot dezibot;
+
+const uint duty = 8192; //Full tilt
+
+void setup() {
+  dezibot.motion.begin();
+}
+
+void loop() {
+  // Alternatingly turn on the Motors. Use the commands provided by motion for this, using the provided
+  // functions (with their duty cycle), as it represents typical usage
+  dezibot.motion.rotateClockwise(0,duty);
+  delay(20000);
+  dezibot.motion.rotateAntiClockwise(0,duty);
+  delay(20000);
+  // Turn on both motors at the same time
+  dezibot.motion.left.setSpeed(duty);
+  dezibot.motion.right.setSpeed(duty);  
+  delay(20000);
+  dezibot.motion.stop();
+  delay(20000);
+}