Enable asar
Enable asar

Summary: Enable asar which should further improve startup time and bundle size

Reviewed By: passy

Differential Revision: D23705524

fbshipit-source-id: 161d28e4c3995615166171ab4926ec011a4b5dfb

facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper,facebook/flipper