Summary:
The current ownership and release model prevents cleanly releasing new versions of the plugin while the code is split between two repos.
This diff moves the flipper-litho plugin to the Litho repository. You'll find new releases as `litho-editor-flipper` that'll be reexported via gradle's `api` to the old artifact.
Reviewed By: colriot
Differential Revision: D23962234
fbshipit-source-id: 7884423342904219ae9b41632c6df90cda870798
51293406d6