Remove 'path' from plugins

Summary:
1. Add `path` replacement
1. Remove Node's path for all plugins but MobileBuildsPluginContainer (it is probably going to be moved to the server)

Reviewed By: mweststrate

Differential Revision: D32766327

fbshipit-source-id: e636f273842506e752b97cf1b28ce7ac51ce9a12

desktop/plugins/public/reactdevtools/index.tsx

@@ -16,13 +16,13 @@ import {
   useValue,
   sleep,
   Toolbar,
+  path,
 } from 'flipper-plugin';
 import React from 'react';
 import getPort from 'get-port';
 import {Button, message, Switch, Typography} from 'antd';
 import child_process from 'child_process';
 import fs from 'fs';
-import path from 'path';
 import {DevToolsEmbedder} from './DevToolsEmbedder';
 
 const DEV_TOOLS_NODE_ID = 'reactdevtools-out-of-react-node';