Small ResourceManager refactor, add ResourceSaver<T>.

DaggerFramework/Source/Resources/Loaders/Texture2dLoader.cs

@@ -3,7 +3,7 @@ using StbImageSharp;
 
 namespace DaggerFramework
 {
-    public class Texture2dLoader : IResourceLoader
+    public class Texture2dLoader : IResourceLoader<Texture2d>
     {
         public IEnumerable<string> SupportedExtensions => new string[]
         {
@@ -12,9 +12,7 @@ namespace DaggerFramework
             ".jpeg"
         };
 
-        public Type ResourceType => typeof(Texture2d);
-
-        public Resource Load(string path)
+        public Texture2d Load(string path)
         {
             ImageResult image;
             using (var stream = File.OpenRead(path))
@@ -28,10 +26,5 @@ namespace DaggerFramework
 
             return result;
         }
-
-        Resource IResourceLoader.Load(string path)
-        {
-            throw new NotImplementedException();
-        }
     }
 }