Re-use pkg-lib for runtime plugin compilation

Summary: Re-use the same function for plugin building both at publishing time by "flipper-pkg" and in runtime by Flipper itself.

Reviewed By: jknoxville

Differential Revision: D21129685

fbshipit-source-id: b7bff6737310352d28a14223128f127ac4d2eebf

desktop/types/nodejs.tsx

@@ -12,7 +12,6 @@ declare module NodeJS {
     __REVISION__: string | undefined;
     __VERSION__: string;
     electronRequire: (name: string) => any;
-    electronResolve: (name: string) => string;
     window: Window | undefined;
     WebSocket: any;
     fetch: any;