Add OliveProgram scriptless replacement

orx-olive/src/demo/kotlin/DemoOliveScriptless01.kt

@@ -1,28 +1,36 @@
 import org.openrndr.Extension
-import org.openrndr.Program
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
 import org.openrndr.extensions.SingleScreenshot
-import org.openrndr.extra.olive.Olive
-import org.openrndr.math.IntVector2
+import org.openrndr.extra.olive.oliveProgram
+import kotlin.math.cos
 
 fun main() {
     application {
         configure {
-            position = IntVector2(3440 / 2 + 200, 360)
             width = 1280
             height = 720
         }
-        program {
-            extend(Olive<Program>()) {
-                // -- this block is for automation purposes only
-                if (System.getProperty("takeScreenshot") == "true") {
-                    scriptLoaded.listen {
+        oliveProgram {
+            extend {
+                drawer.clear(ColorRGBa.GRAY)
+                drawer.fill = ColorRGBa.WHITE
+                for (i in 0 until 100) {
+                    drawer.circle(
+                            width / 2.0 + cos(seconds + i) * 320.0,
+                            i * 7.2,
+                            cos(i + seconds * 0.5) * 20.0 + 20.0)
+                }
+            }
+        }
+                // -- this is only needed for the automated screenshots
+                .olive.scriptLoaded.listen {
+                    if (System.getProperty("takeScreenshot") == "true") {
                         // -- this is a bit of hack, we need to push the screenshot extension in front of the olive one
-                        fun <T : Extension> Program.extendHead(extension: T, configure: T.() -> Unit): T {
-                            extensions.add(0, extension)
+                        fun <T : Extension> extendHead(extension: T, configure: T.() -> Unit): T {
+                            program.extensions.add(0, extension)
                             extension.configure()
-                            extension.setup(this)
+                            extension.setup(program)
                             return extension
                         }
                         extendHead(SingleScreenshot()) {
@@ -30,17 +38,5 @@ fun main() {
                         }
                     }
                 }
-                script = "orx-olive/src/demo/kotlin/DemoOliveScriptless01.kt"
-                program {
-                    extend {
-                        drawer.background(ColorRGBa.PINK)
-                        drawer.circle(width /2.0, height / 2.0, 300.0 + Math.cos(seconds)*100.0)
-
-                        drawer.fill = ColorRGBa.RED
-                        drawer.circle(mouse.position, 100.0)
-                    }
-                }
-            }
-        }
     }
 }