Split Enums, Structs & Classes into own files

Raylib-cs/ModelAnimation.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Raylib_cs
+{
+    /// <summary>Model animation</summary>
+    [StructLayout(LayoutKind.Sequential)]
+    public struct ModelAnimation
+    {
+        /// <summary>
+        /// Number of bones
+        /// </summary>
+        public int boneCount;
+
+        /// <summary>
+        /// Number of animation frames
+        /// </summary>
+        public int frameCount;
+
+        /// <summary>
+        /// Bones information (skeleton, BoneInfo *)
+        /// </summary>
+        public IntPtr bones;
+
+        /// <summary>
+        /// Poses array by frame (Transform **)
+        /// </summary>
+        public IntPtr framePoses;
+    }
+}