added turtle instruction set

src/lib/turtle/TurtleInstruction.hx

@@ -0,0 +1,17 @@
+package lib.turtle;
+
+import kernel.turtle.Types.InteractDirections;
+import kernel.turtle.Types.TurtleSlot;
+
+enum TurtleInstruction {
+	Forward;
+	Back;
+	Up;
+	Down;
+	TurnLeft;
+	TurnRight;
+	Dig(dir: InteractDirections);
+	Place(dir: InteractDirections);
+	PlacseSign(dir: InteractDirections, text: String);
+	Select(slot: TurtleSlot);
+}