Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1503
This diff makes it so that our driver will sign all of the generated files to help ensure that they are not edited by hand. Next I will add CI to actually verify the signature
Reviewed By: NickGerleman
Differential Revision: D51966201
fbshipit-source-id: f7e3f4fde1c98832212a448b2dcc8e21be0560c4
