Small ResourceManager refactor, add ResourceSaver<T>.

DaggerFramework/Source/Resources/Loaders/FontLoader.cs

@@ -1,15 +1,13 @@
 namespace DaggerFramework.Resources;
 
-public class FontLoader : IResourceLoader
+public class FontLoader : IResourceLoader<Font>
 {
     public IEnumerable<string> SupportedExtensions => new string[]
     {
         "ttf"
     };
 
-    public Type ResourceType => typeof(Font);
-
-    public Resource Load(string path)
+    public Font Load(string path)
     {
         byte[] fileBuffer = File.ReadAllBytes(path);
         var result = new Font(path, fileBuffer);