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/chrome/DevicesButton.js

@@ -5,7 +5,7 @@
  * @format
  */
 
-import {Component, Button} from 'sonar';
+import {Component, Button} from 'flipper';
 import {connect} from 'react-redux';
 import {spawn} from 'child_process';
 import {selectDevice, preferDevice} from '../reducers/connections.js';