add snippet 'sensor-reading'

snippets/sensor-reading/qml/main.qml

@@ -0,0 +1,23 @@
+import QtQuick 2.15
+import QtSensors 5.15
+
+Rectangle {
+  width: 300
+  height: 500
+
+  Accelerometer {
+    id: accel
+    active: true
+    accelerationMode: Accelerometer.User // exclude gravity
+  }
+
+  Timer {
+    id: timer
+    interval: 50
+    repeat: true
+    running: true
+
+    onTriggered: Lisp.call("qml-user:accel-changed",
+                           accel.reading.x, accel.reading.y, accel.reading.z)
+  }
+}