Removed NioTSO client and server

- NioTSO client isn't needed because we're using RayLib
- Added FreeSO's API server to handle most backend operations

server/tso.common/Rendering/TextureInfo.cs

@@ -0,0 +1,21 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+
+namespace FSO.Common.Rendering
+{
+    public class TextureInfo
+    {
+        public Vector2 UVScale;
+        public Point Size;
+        public Point Diff;
+
+        public TextureInfo() { }
+
+        public TextureInfo(Texture2D tex, int width, int height)
+        {
+            Size = new Point(width, height);
+            Diff = new Point(tex.Width, tex.Height) - Size;
+            UVScale = Size.ToVector2() / new Vector2(tex.Width, tex.Height);
+        }
+    }
+}