First integration of the motion sensor (bma 421) : step counting + wake on wrist rotation + app to see the value of the 3 axis in "real time".

src/components/motion/MotionController.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <cstdint>
+
+namespace Pinetime {
+  namespace Controllers {
+    class MotionController {
+    public:
+      void Update(int16_t x, int16_t y, int16_t z, uint32_t nbSteps);
+
+      uint16_t X() const { return x; }
+      uint16_t Y() const { return y; }
+      uint16_t Z() const { return z; }
+      uint32_t NbSteps() const { return nbSteps; }
+      bool ShouldWakeUp(bool isSleeping);
+
+      private:
+      uint32_t nbSteps;
+      int16_t x;
+      int16_t y;
+      int16_t z;
+      int16_t lastYForWakeUp = 0;
+
+    };
+  }
+}