enum module
enum module

Summary: Collect canonical enum forms in their own module.

Reviewed By: samwgoldman

Differential Revision: D7064421

fbshipit-source-id: 21ba3cd551ae17ac35c1a775948f974b7c0fe0fd

popham/flow,mroch/flow,facebook/flow,claudiopro/flow,nmote/flow,JonathanUsername/flow,popham/flow,gabelevi/flow,jamesgpearce/flow,popham/flow,jamesgpearce/flow,AgentME/flow,mroch/flow,facebook/flow,JonathanUsername/flow,JonathanUsername/flow,JonathanUsername/flow,popham/flow,samwgoldman/flow,nmote/flow,mroch/flow,JonathanUsername/flow,gabelevi/flow,jamesgpearce/flow,jamesgpearce/flow,mroch/flow,gabelevi/flow,claudiopro/flow,facebook/flow,AgentME/flow,nmote/flow,AgentME/flow,popham/flow,samwgoldman/flow,nmote/flow,mroch/flow,samwgoldman/flow,jamesgpearce/flow,popham/flow,facebook/flow,mroch/flow,claudiopro/flow,claudiopro/flow,gabelevi/flow,facebook/flow,jamesgpearce/flow,samwgoldman/flow,samwgoldman/flow,nmote/flow,nmote/flow,AgentME/flow,jamesgpearce/flow,samwgoldman/flow,gabelevi/flow,samwgoldman/flow,nmote/flow,claudiopro/flow,AgentME/flow,JonathanUsername/flow,mroch/flow,JonathanUsername/flow,facebook/flow,gabelevi/flow,popham/flow,gabelevi/flow,facebook/flow