Add optional QR-code overlay for orx-rabbit-control

* Optional QR-code overlay for orx-rabbit-control
* Animate the QR-code overlay
* Changed orx-rabbit-control to the new demo structure
* Changed orx-rabbit-control README.MD

orx-rabbit-control/src/demo/kotlin/DemoRabbitControl.kt

@@ -0,0 +1,62 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.loadFont
+import org.openrndr.extra.parameters.*
+import org.openrndr.math.Vector2
+import org.openrndr.math.Vector3
+import org.openrndr.math.Vector4
+
+
+fun main() = application {
+    configure {
+        width = 800
+        height = 800
+    }
+
+    program {
+        val rabbit = RabbitControlServer()
+        val font= loadFont("orx-rabbit-control/src/demo/resources/fonts/Roboto-Regular.ttf", 20.0)
+        val settings = object {
+            @TextParameter("A string")
+            var s: String = "Hello"
+
+            @DoubleParameter("A double", 0.0, 10.0)
+            var d: Double = 10.0
+
+            @BooleanParameter("A bool")
+            var b: Boolean = true
+
+            @ColorParameter("A fill color")
+            var fill = ColorRGBa.PINK
+
+            @ColorParameter("A stroke color")
+            var stroke = ColorRGBa.WHITE
+
+            @Vector2Parameter("A vector2")
+            var v2 = Vector2(200.0,200.0)
+
+            @Vector3Parameter("A vector3")
+            var v3 = Vector3(200.0, 200.0, 200.0)
+
+            @Vector4Parameter("A vector4")
+            var v4 = Vector4(200.0, 200.0, 200.0, 200.0)
+
+            @ActionParameter("Action test")
+            fun clicked() {
+                println("Clicked from RabbitControl")
+            }
+        }
+
+        rabbit.add(settings)
+
+        extend(rabbit)
+        extend {
+            drawer.background(if (settings.b) ColorRGBa.BLUE else ColorRGBa.BLACK)
+            drawer.fontMap = font
+            drawer.fill = settings.fill
+            drawer.stroke = settings.stroke
+            drawer.circle(settings.v2, settings.d)
+            drawer.text(settings.s, 10.0, 20.0)
+        }
+    }
+}