search for effects

i'll keep this and if the owner wants it i'll submit a PR.
but i really did this to see if i could.

src/effects/Matrix.js

@@ -109,6 +109,10 @@ export default class Effect {
     return _('Matrix');
   }
 
+  //this can be used for searching, and helping people find the effect they are looking for
+  static description = "The Matrix effect overlays a cascading grid of random letters, mimicking the iconic 'Matrix' code with customizable trail and tip colors, randomness, and letter size. The letters flow downward at variable speeds, creating a dynamic, glitchy animation reminiscent of digital rain.";
+
+
   // -------------------------------------------------------------------- API for prefs.js
 
   // This is called by the preferences dialog whenever a new effect profile is loaded. It