Upgrade example project to 0.66

Summary:
Per https://react-native-community.github.io/upgrade-helper/?from=0.65.1&to=0.66.0

Also cleaned up lockfiles, made relative-deps non-default, removed old resolutions since I got weird errors with them.

allow-large-files

Reviewed By: timur-valiev

Differential Revision: D31471307

fbshipit-source-id: 2ef8856498bb73293d6638b2c08a1042adb636e5

react-native/ReactNativeFlipperExample/index.native.js

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {AppRegistry} from 'react-native';
+import App from './App';
+import {name as appName} from './app.json';
+
+AppRegistry.registerComponent(appName, () => App);