Fixup Enum Generator

Summary:
https://github.com/facebook/yoga/pull/1116 adds a new enum. The enum generator is out of date with copyright header, and some codemods, but it also looks like there were manual changes, types added, etc since generation. I fixed up the script to incorporate generating the changes folks made manually, and also added an enum that was previously only added manually to the C ABI.

Changelog:
[General][Fixed] - Fixup Yoga Enum Generator

Reviewed By: yungsters

Differential Revision: D39922252

fbshipit-source-id: b678fa9a43a896873d8c434745bdaf3f16fd991f

csharp/Facebook.Yoga/YogaDirection.cs

@@ -1,10 +1,12 @@
 /*
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
 
+// @generated by enums.py
+
 namespace Facebook.Yoga
 {
     public enum YogaDirection