* Update index.ts
Added description field to IChannelOptions object and changed vibration type to get a number array
* Update index.ts
Added description field to IChannelOptions object and changed vibration type to get a number array
BREAKING CHANGE: update firebase-x-cordova plugin to version 7
* fix(firebase-x): update types to match cordova-plugin-firebasex 7.0.0
* fix(firebase-x): Add getAPNSToken(), add `onApnsTokenReceived()`
* Add getAPNSToken() plugin API method to get the APNS token on iOS.
* (iOS) Add `onApnsTokenReceived()` to register a callback function to be invoked when the APNS token is allocated.
* fix lint errors