Reorganize types

- Move into types folder
- Group types based on usage

Raylib-cs/NPatchInfo.cs

@@ -1,41 +0,0 @@
-using System.Runtime.InteropServices;
-
-namespace Raylib_cs
-{
-    /// <summary>
-    /// N-Patch layout info
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential)]
-    public struct NPatchInfo
-    {
-        /// <summary>
-        /// Texture source rectangle
-        /// </summary>
-        public Rectangle source;
-
-        /// <summary>
-        /// Left border offset
-        /// </summary>
-        public int left;
-
-        /// <summary>
-        /// Top border offset
-        /// </summary>
-        public int top;
-
-        /// <summary>
-        /// Right border offset
-        /// </summary>
-        public int right;
-
-        /// <summary>
-        /// Bottom border offset
-        /// </summary>
-        public int bottom;
-
-        /// <summary>
-        /// Layout of the n-patch: 3x3, 1x3 or 3x1
-        /// </summary>
-        public NPatchLayout layout;
-    }
-}