update presets performance and refactor class, plus change more icons

check_image_size.py

@@ -0,0 +1,9 @@
+from PIL import Image
+import os
+
+icon_dir = 'assets/icons'
+for filename in os.listdir(icon_dir):
+    if filename.endswith('.png'):
+        path = os.path.join(icon_dir, filename)
+        img = Image.open(path)
+        print(f"{filename}: {img.size}")