Delegate to launcher app on startup
Delegate to launcher app on startup

Summary:
For the production version, if the Launcher is installed and no `--no-launcher` (note the double-negation) is supplied, then
let the launcher start the app instead.

The launcher will pass the `--no-launcher` option back to prevent this from looping.

Reviewed By: jknoxville

Differential Revision: D14066620

fbshipit-source-id: 27d305efac36005e5e1082076829f10ef14aba0d

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