[orx-turtle] Add orx-turtle module

orx-turtle/src/jvmDemo/kotlin/DemoTurtle02.kt

@@ -0,0 +1,28 @@
+/*
+A simple random walk made using the turtle interface.
+*/
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.noise.uniform
+import org.openrndr.extra.turtle.turtle
+import org.openrndr.math.Vector2
+import kotlin.random.Random
+
+fun main() {
+    application {
+        program {
+            val r = Random(40)
+            val contours = turtle(drawer.bounds.center + Vector2(-50.0, 50.0)) {
+                for (i in 0 until 500) {
+                    rotate(Double.uniform(-90.0, 90.0, r))
+                    forward(Double.uniform(10.0, 40.0, r))
+                }
+            }
+            extend {
+                drawer.stroke = ColorRGBa.PINK
+                drawer.contours(contours)
+            }
+        }
+    }
+}