Rename package to 'flipper'

Summary:
- rename package `'sonar'` > `'flipper'`
- rename package `'sonar-static'` > `'flipper-static'`
- rename package export from `window.Sonar` to `window.Flipper`

Reviewed By: passy

Differential Revision: D9851181

fbshipit-source-id: 34d4447c3b287496b3d20ddb54471ce777ec74e1

src/plugin.js

@@ -12,7 +12,7 @@ import type Client from './Client.js';
 
 import React from 'react';
 import BaseDevice from './devices/BaseDevice.js';
-import {AndroidDevice, IOSDevice} from 'sonar';
+import {AndroidDevice, IOSDevice} from 'flipper';
 
 const invariant = require('invariant');