Bindings moved to standard

- Bindings changed to a .Net standard library.
- Split up testing code and library into a Test project.

Test/Program.cs

@@ -0,0 +1,50 @@
+using System;
+using Raylib;
+using static Raylib.Raylib;
+
+// example to quickly test bindings
+// otherwise build as a class library to use in other projects
+class Program
+{ 
+    public static void Main()
+    {
+        //RayForms.Run();
+        //return;
+
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        int screenWidth = 800;
+        int screenHeight = 450;
+
+        // SetConfigFlags((int)Flag.WINDOW_UNDECORATED);
+        InitWindow(screenWidth, screenHeight, "raylib [core] example - basic window");
+
+        SetTargetFPS(60);
+        //--------------------------------------------------------------------------------------      
+
+        // Main game loop
+        while (!WindowShouldClose())    // Detect window close button or ESC key
+        {
+            // Update
+            //----------------------------------------------------------------------------------
+            // TODO: Update your variables here
+            //----------------------------------------------------------------------------------
+
+            // Draw
+            //----------------------------------------------------------------------------------
+            BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+            
+            DrawText("Congrats! You created your first window!", 190, 200, 20, MAROON);
+            
+            EndDrawing();
+            //----------------------------------------------------------------------------------
+        }
+
+        // De-Initialization
+        //--------------------------------------------------------------------------------------   
+        CloseWindow();        // Close window and OpenGL context
+                              //--------------------------------------------------------------------------------------
+    }
+}