[orx-camera] Improve demo descriptions, add demo

orx-camera/src/jvmDemo/kotlin/DemoCamera2DManual01.kt

@@ -3,15 +3,12 @@ import org.openrndr.color.ColorRGBa
 import org.openrndr.extra.camera.Camera2DManual
 
 /**
- * Demonstrate the use of `Camera2DManual` for manual camera control.
+ * Demonstrates how to use `Camera2DManual` to have
+ * some elements affected by an interactive 2D camera combined with
+ * other elements not affected by it.
  *
- * The application is configured with a 720x720 window size. Within the program, a custom camera (`Camera2DManual`)
- * is initialized and used to create isolated drawing scopes. The `isolated` method is used to overlay different
- * drawing operations while maintaining individual camera states, ensuring proper transformations for specific elements.
- *
- * Three circles are drawn on the canvas: a small pink one, a medium white one and a large pink one.
- * Only the pink ones are affected by the interactive `Camera2DManual`, while the middle white circle is outside
- * the camera's isolated scope.
+ * In this example both PINK circles can be dragged, scaled and rotated
+ * while the white circle in the middle is static.
  */
 fun main() = application {
     configure {