Split Enums, Structs & Classes into own files

Raylib-cs/CameraMode.cs

@@ -0,0 +1,12 @@
+namespace Raylib_cs
+{
+    /// <summary>Camera system modes</summary>
+    public enum CameraMode
+    {
+        CAMERA_CUSTOM = 0,
+        CAMERA_FREE,
+        CAMERA_ORBITAL,
+        CAMERA_FIRST_PERSON,
+        CAMERA_THIRD_PERSON
+    }
+}