Summary:
As a first step I've configured bundling for the main process code using Metro. For now I haven't converted anything to ts, just made that possible.
The bundle is just produced into the "static" directory. To avoid too many changes I kept the "static" folder as it is, but probably non-static code should be moved from there.
Also installed modules from "node_modules" for the main process are not bundled to avoid potential issues with node native modules.
Reviewed By: mweststrate
Differential Revision: D19960982
fbshipit-source-id: efbd426254e2b37c913c5f5f75f042c50ccee2f3
18c259dc22