added example turtle program

src/bin/turtle/Patrol.hx

@@ -0,0 +1,31 @@
+package bin.turtle;
+
+import kernel.turtle.TurtleMutex;
+import kernel.ps.ProcessHandle;
+import kernel.ps.Process;
+
+class Patrol implements Process {
+	private var handle:ProcessHandle;
+
+	public function new() {}
+
+	public function run(handle:ProcessHandle) {
+		this.handle = handle;
+
+		if (!handle.claimTurtleMutex()) {
+			handle.writeLine("Failed to claim turtle mutex");
+			handle.close();
+		}
+
+		handle.writeLine("Patroling");
+
+		TurtleMutex.runInTThread(() -> {
+			while (true) {
+				kernel.turtle.Turtle.forward();
+				kernel.turtle.Turtle.forward();
+				kernel.turtle.Turtle.forward();
+				kernel.turtle.Turtle.turnLeft();
+			}
+		});
+	}
+}