🎉 Add kwin hexagon effect

kwin/kwin4_effect_hexagon/onAnimationBegin.js

@@ -0,0 +1,4 @@
+// This part is automatically included in the effect's source during the build process.
+// The code below is called whenever a window is closed or opened.
+
+effect.setUniform(this.shader, 'uSeed', [Math.random(), Math.random()]);