Update react-native PushNotificationIOS Typings
Update react-native PushNotificationIOS Typings

React-Native typings are currently missing two crucial definitions when implementing iOS notifications: finish function and FetchResult strings. If a finish function is not called, the background remote notifications could be throttled.

Sources:
https://facebook.github.io/react-native/docs/pushnotificationios.html#finish
https://github.com/facebook/react-native/blob/master/Libraries/PushNotificationIOS/PushNotificationIOS.js#L133
https://github.com/facebook/react-native/blob/master/Libraries/PushNotificationIOS/PushNotificationIOS.js#L454
magny/DefinitelyTyped,AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped,benliddicott/DefinitelyTyped,alexdresko/DefinitelyTyped,rolandzwaga/DefinitelyTyped,mcliment/DefinitelyTyped,rolandzwaga/DefinitelyTyped,magny/DefinitelyTyped,zuzusik/DefinitelyTyped,chrootsu/DefinitelyTyped,arusakov/DefinitelyTyped,AgentME/DefinitelyTyped,chrootsu/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,alexdresko/DefinitelyTyped,georgemarshall/DefinitelyTyped,zuzusik/DefinitelyTyped,borisyankov/DefinitelyTyped,dsebastien/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,zuzusik/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,arusakov/DefinitelyTyped,AgentME/DefinitelyTyped,one-pieces/DefinitelyTyped,georgemarshall/DefinitelyTyped,arusakov/DefinitelyTyped