Add 11 new fractal presets and enhance audio visuals

Expanded fractal preset range to 20 with unique names and rendering functions for each. Added new visual effects including equalizer bars, metaballs, galaxy, aurora, vortex, laser grid, rain ripple, ink smoke, mosaic, ribbon, and grain bars. Improved CRT feedback with audio spectrum integration. Introduced utility and ring drawing functions. Updated preset selection and naming logic.

FractalVisualizer/Game1.cs

@@ -124,7 +124,7 @@ public class Game1 : Game
 
         if (IsPressed(keyboard, Keys.Right))
         {
-            _fractalPresetIndex = Math.Min(8, _fractalPresetIndex + 1);
+            _fractalPresetIndex = Math.Min(19, _fractalPresetIndex + 1);
         }
 
         if (IsPressed(keyboard, Keys.M))
@@ -212,6 +212,17 @@ public class Game1 : Game
             6 => "FLAMEGRILL",
             7 => "NOTES",
             8 => "FIREWORKS",
+            9 => "EQCITY",
+            10 => "METABALL",
+            11 => "GALAXY",
+            12 => "AURORA",
+            13 => "VORTEX",
+            14 => "LASERGRID",
+            15 => "RAINRIPPLE",
+            16 => "INKSMOKE",
+            17 => "MOSAIC",
+            18 => "RIBBON",
+            19 => "GRAINBARS",
             _ => "JULIA"
         };
     }