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/ui/components/elements-inspector/sidebar.js

@@ -12,7 +12,7 @@ import Panel from '../Panel.js';
 import ManagedDataInspector from '../data-inspector/ManagedDataInspector.js';
 import {Component} from 'react';
 import {Console} from '../console';
-import {GK} from 'sonar';
+import {GK} from 'flipper';
 
 const deepEqual = require('deep-equal');