Expose AppDelegate callbacks for universal modules

[sjchmiela]

vide https://github.com/expo/expo/pull/2543/files#r231172050

[EvanBacon]

Also for notifications https://github.com/expo/expo/tree/master/packages/expo-firebase-notifications#common-setup

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(nonnull NSDictionary *)userInfo fetchCompletionHandler:(nonnull void (^)(UIBackgroundFetchResult))completionHandler;

and Linking: https://github.com/expo/expo/tree/master/packages/expo-firebase-invites#common-setup

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url options:(NSDictionary<NSString *, id> *)options;
- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray *))restorationHandler;

[tsapeta]

Closing - it's been fixed by #3917.