refactor: optimize plugins for angular treeshaking

BREAKING CHANGE: You can remove the plugin import from the app.module.ts because of the changed Inject decorator

src/@ionic-native/plugins/taptic-engine/index.ts

@@ -31,7 +31,9 @@ import { Injectable } from '@angular/core';
   repo: 'https://github.com/EddyVerbruggen/cordova-plugin-taptic-engine',
   platforms: ['iOS']
 })
-@Injectable()
+@Injectable({
+  providedIn: 'root'
+})
 export class TapticEngine extends IonicNativePlugin {
   /**
    * Use selection feedback generators to indicate a change in selection.