Summary:
Every time an app connects to flipper, it will include its version.
With this information, the desktop app will be able to know how to communicate with it (or even whether it still can - and show an error message if not).
Reviewed By: passy
Differential Revision: D14008785
fbshipit-source-id: ac4dfd52da4bc6a2b90ec09a8e619086b7cd4a59
0413bbd458