[ionic 5] Push Notifications 추가하기

1. sudo ionic cordova plugin add cordova-plugin-local-notification

2.npm install @ionic-native/local-notifications

3. app.module.ts 상에 서비스 선언

//LocalNotifications(ngx로 import 해야함) 추가

import { LocalNotifications } from '@ionic-native/local-notifications/ngx'

...

providers: [

StatusBar,

SplashScreen,

{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy },

LocalNotifications

],

...