Improve ImageLoader performance

Author: Jack251970

Flow.Launcher.Infrastructure/Image/ImageLoader.cs

@@ -22,7 +22,7 @@ public static class ImageLoader
         private static Lock storageLock { get; } = new();
         private static BinaryStorage<List<(string, bool)>> _storage;
         private static readonly ConcurrentDictionary<string, string> GuidToKey = new();
-        private static IImageHashGenerator _hashGenerator;
+        private static ImageHashGenerator _hashGenerator;
         private static readonly bool EnableImageHash = true;
         public static ImageSource Image => ImageCache[Constant.ImageIcon, false];
         public static ImageSource MissingImage => ImageCache[Constant.MissingImgIcon, false];
@@ -31,7 +31,7 @@ public static class ImageLoader
         public const int FullIconSize = 256;
         public const int FullImageSize = 320;
 
-        private static readonly string[] ImageExtensions = { ".png", ".jpg", ".jpeg", ".gif", ".bmp", ".tiff", ".ico" };
+        private static readonly string[] ImageExtensions = [".png", ".jpg", ".jpeg", ".gif", ".bmp", ".tiff", ".ico"];
         private static readonly string SvgExtension = ".svg";
 
         public static async Task InitializeAsync()
@@ -327,7 +327,7 @@ public static async ValueTask<ImageSource> LoadAsync(string path, bool loadFullI
             return img;
         }
 
-        private static ImageSource LoadFullImage(string path)
+        private static BitmapImage LoadFullImage(string path)
         {
             BitmapImage image = new BitmapImage();
             image.BeginInit();
@@ -364,7 +364,7 @@ private static ImageSource LoadFullImage(string path)
             return image;
         }
 
-        private static ImageSource LoadSvgImage(string path, bool loadFullImage = false)
+        private static RenderTargetBitmap LoadSvgImage(string path, bool loadFullImage = false)
         {
             // Set up drawing settings
             var desiredHeight = loadFullImage ? FullImageSize : SmallIconSize;