Change folder structure, add solution to the root.

DaggerFramework/Source/Extensions/Mat4Extensions.cs

@@ -0,0 +1,14 @@
+using System.Numerics;
+
+namespace DaggerFramework.Extensions
+{
+    public static class Mat4Extensions
+    {
+        public static Matrix4x4 Scale(this Matrix4x4 mat, Vector2 scale)
+        {
+
+
+            return mat;
+        }
+    }
+}