Refactor ResourceLoader, use only Texture2d in Renderer.

Source/Resources/Loaders/FontLoader.cs

@@ -0,0 +1,9 @@
+namespace DaggerFramework;
+
+public class FontLoader : ResourceLoader<Font>
+{
+    public override Font Load(string path)
+    {
+        throw new NotImplementedException();
+    }
+}

Source/Resources/Loaders/ResourceLoader.cs

@@ -0,0 +1,8 @@
+namespace DaggerFramework
+{
+    public abstract class ResourceLoader<T> : IDisposable where T : Resource
+    {
+        public void Dispose() { }
+        public abstract T Load(string path);
+    }
+}

Source/Resources/Loaders/SoundLoader.cs

@@ -0,0 +1,15 @@
+namespace DaggerFramework
+{
+    public class SoundLoader : ResourceLoader<Sound>
+    {
+        public override Sound Load(string path)
+        {
+            // TODO
+            // var data = File.ReadAllBytes(path);
+            var sound = new Sound(path, new byte[] { });
+            sound.Path = path;
+
+            return sound;
+        }
+    }
+}

Source/Resources/Loaders/Texture2dLoader.cs

@@ -0,0 +1,22 @@
+using StbImageSharp;
+
+namespace DaggerFramework
+{
+    public class Texture2dLoader : ResourceLoader<Texture2d>
+    {
+        public override Texture2d Load(string path)
+        {
+            ImageResult image;
+            using (var stream = File.OpenRead(path))
+            {
+                image = ImageResult.FromStream(stream, ColorComponents.RedGreenBlueAlpha);
+            }
+
+            Texture2d result = new Texture2d(path, image.Data);
+            result.Width = image.Width;
+            result.Height = image.Height;
+
+            return result;
+        }
+    }
+}