Expose a subset of flipper-plugin to flipper server

Summary: Flipper plugins rely on 'flipper-plugin' package being accessible from 'global'. Expose a subset (without UI stuff) of flipper-plugin to server add-ons

Reviewed By: mweststrate

Differential Revision: D34400811

fbshipit-source-id: e0079ddfa67e66c1b24ab02d7682917ddfc84aaf

desktop/babel-transformer/src/electron-requires.tsx

@@ -10,7 +10,7 @@
 import {CallExpression, identifier} from '@babel/types';
 import {NodePath} from '@babel/traverse';
 
-const BUILTINS = [
+export const BUILTINS = [
   'electron',
   'buffer',
   'child_process',