Reorganize types

- Move into types folder
- Group types based on usage

Raylib-cs/Model.cs

@@ -1,58 +0,0 @@
-using System;
-using System.Numerics;
-using System.Runtime.InteropServices;
-
-namespace Raylib_cs
-{
-    /// <summary>
-    /// Model type
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential)]
-    public struct Model
-    {
-        /// <summary>
-        /// Local transform matrix
-        /// </summary>
-        public Matrix4x4 transform;
-
-        /// <summary>
-        /// Number of meshes
-        /// </summary>
-        public int meshCount;
-
-        /// <summary>
-        /// Number of materials
-        /// </summary>
-        public int materialCount;
-
-        /// <summary>
-        /// Meshes array (Mesh *)
-        /// </summary>
-        public IntPtr meshes;
-
-        /// <summary>
-        /// Materials array (Material *)
-        /// </summary>
-        public IntPtr materials;
-
-        /// <summary>
-        /// Mesh material number (int *)
-        /// </summary>
-        public IntPtr meshMaterial;
-
-        /// <summary>
-        /// Number of bones
-        /// </summary>
-        public int boneCount;
-
-        /// <summary>
-        /// Bones information (skeleton, BoneInfo *)
-        /// </summary>
-        public IntPtr bones;
-
-        /// <summary>
-        /// Bones base transformation (pose, Transform *)
-        /// </summary>
-        public IntPtr bindPose;
-    }
-}