Added Raymath binding + Initial examples

- Added Raymath.cs binding. Raylib.cs depends on this since they both share some types.
- Bindings moved into source directly.
- Inital examples port alot of syntax still needs to be fixed.
- Couldn't get cppsharp to work correctly so using a custom generator(WIP).

ExampleApplication/Easings.cs

@@ -0,0 +1,27 @@
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Raylib
+{
+    #region Raylib-cs Enums
+
+    #endregion
+
+    #region Raylib-cs Types
+
+
+    #endregion
+
+    public static partial class rl
+    {
+        #region Raylib-cs Variables
+
+		#endregion
+
+        #region Raylib-cs Functions
+
+        #endregion
+        
+    }
+}