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/Framework/Camera/OrthographicCamera.cs

@@ -0,0 +1,37 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+
+namespace FSO.Common.Rendering.Framework.Camera
+{
+    /// <summary>
+    /// Orthographic camera for the game. Used for rendering lots.
+    /// </summary>
+    public class OrthographicCamera : BasicCamera
+    {
+        public OrthographicCamera(GraphicsDevice device, Vector3 Position, Vector3 Target, Vector3 Up) 
+            : base(device, Position, Target, Up)
+        {
+        }
+
+        protected override void CalculateProjection()
+        {
+            var device = m_Device;
+            var aspect = device.Viewport.AspectRatio * AspectRatioMultiplier;
+
+            var ratioX = m_ProjectionOrigin.X / device.Viewport.Width;
+            var ratioY = m_ProjectionOrigin.Y / device.Viewport.Height;
+
+            var projectionX = 0.0f - (1.0f * ratioX);
+            var projectionY = (1.0f * ratioY);
+
+            m_Projection = Matrix.CreateOrthographicOffCenter(
+                projectionX, projectionX + 1.0f,
+                ((projectionY - 1.0f) / aspect), (projectionY) / aspect,
+                NearPlane, FarPlane
+            );
+
+            var zoom = 1 / m_Zoom;
+            m_Projection = m_Projection * Matrix.CreateScale(zoom);
+        }
+    }
+}