[orx-noise] Tidy up demos

Produce 720px wide images.
Use main() = application { for reduced indentation

orx-noise/src/jvmDemo/kotlin/hash/DemoUHash01.kt

@@ -0,0 +1,26 @@
+package hash
+
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.extra.noise.fhash3D
+
+fun main() = application {
+    configure {
+        width = 720
+        height = 360
+    }
+    program {
+        extend {
+            drawer.points {
+                for (y in 0 until height) {
+                    for (x in 0 until width) {
+                        val c = fhash3D(100, x + (seconds * 60.0).toInt(), y, (0).toInt())
+                        //val u = uhash11(x.toUInt()).toDouble() / UInt.MAX_VALUE.toDouble()
+                        fill = ColorRGBa(c, c, c, 1.0)
+                        point(x.toDouble(), y.toDouble())
+                    }
+                }
+            }
+        }
+    }
+}