Add N&N for animated effects migrated to SWT GraphicsExample

Covers the migration work tracked in
eclipse-platform/eclipse.platform.swt#3189,
introducing a Misc category with effects from SWT-OldSchoolEffect.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vogella

news/4.40/images/graphics-examples.gif

@@ -33,3 +33,19 @@ The feature is disabled by default to preserve backward compatibility.
 ![Dirty Indicator Light Theme](images/dirty-indicator-light.png)
 
 ![Dirty Indicator Dark Theme](images/dirty-indicator-dark.png)
+
+### New Animated Effects in SWT GraphicsExample
+<!-- https://github.com/eclipse-platform/eclipse.platform.swt/issues/3189 -->
+<details>
+<summary>Contributors</summary>
+
+- [Laurent Caron](https://github.com/lcaron) (original author of SWT-OldSchoolEffect)
+- [Lars Vogel](https://github.com/vogella)
+</details>
+
+The SWT `GraphicsExample` snippet has been extended with a large collection of animated demo tabs in the new `Misc` category.
+These effects were migrated from the [SWT-OldSchoolEffect](https://github.com/lcaron/SWT-OldSchoolEffect) project (with permission from the original author, [Laurent Caron](https://github.com/lcaron)) and serve as useful tests and demonstrations for SWT's `Canvas`, `GC`, and `Image` rendering.
+
+Newly available effects include Starfield, Ripple, Blob, Burning Sea, Copper Bars, Explosion, Fire, Mandelbrot, Moiré, Plasma, Raster Bars, Shade Bobs, Twister, Wave, Dancing, Bump Mapping, Flat Text, Lens, Block Effect, Twirl, Sine Wave, Sky, Unlimited Balls, and Warp.
+
+![SWT GraphicsExample Animated Effects](images/graphics-examples.gif)