[orx-noise] Add comments to all demos, add demo

orx-noise/src/jvmDemo/kotlin/linearrange/DemoLinearRange02.kt

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+package linearrange
+
+import org.openrndr.application
+import org.openrndr.color.ColorLCHUVa
+import org.openrndr.extra.math.linearrange.rangeTo
+import org.openrndr.extra.noise.linearrange.hash
+import org.openrndr.shape.Circle
+
+/**
+ * Demonstrates how to create a linear range with two [org.openrndr.shape.Circle]s.
+ *
+ * This range is then sampled at 100 random locations using the `hash` method to get and render interpolated
+ * circles. The random seed changes once per second.
+ *
+ * Colors are calculated based on the index of each circle.
+ */
+fun main() {
+    application {
+        configure {
+            width = 720
+            height = 720
+        }
+        program {
+            val circle1 = Circle(drawer.bounds.position(0.3, 0.3), 50.0)
+            val circle2 = Circle(drawer.bounds.position(0.7, 0.7), 200.0)
+            val range = circle1..circle2
+            extend {
+                for (i in 0 until 100) {
+                    drawer.fill = ColorLCHUVa(i * 1.0, i * 1.0, i * 30.0).toRGBa().opacify(0.6)
+                    drawer.circle(range.hash(seconds.toInt(), i))
+                }
+            }
+        }
+    }
+}