feat(app-launcher): add plugin

related: #2889

src/@ionic-native/plugins/app-launcher/index.ts

@@ -0,0 +1,66 @@
+import { Injectable } from '@angular/core';
+import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
+
+export interface AppLauncherOptions {
+  uri?: string;
+  packageName?: string;
+}
+
+/**
+ * @name App Launcher
+ * @description
+ * Simple Cordova plugin to see if other apps are installed and launch them.
+ *
+ * @usage
+ * ```typescript
+ * import { AppLauncher, AppLauncherOptions } from '@ionic-native/app-launcher/ngx';
+ * import { Platform } from '@ionic/angular';
+ *
+ * constructor(private appLauncher: AppLauncher, private platform: Platform) { }
+ *
+ * ...
+ *
+ * const options: AppLauncherOptions = {
+ * }
+ *
+ * if(this.platform.is('ios')) {
+ *   options.uri = 'fb://'
+ * } else {
+ *   options.packageName = 'com.facebook.katana'
+ * }
+ *
+ * this.appLauncher.canLaunch(options)
+ *   .then((canLaunch: boolean) => console.log('Facebook is available'))
+ *   .catch((error: any) => console.error('Facebook is not available'));
+ *
+ * ```
+ */
+@Plugin({
+  pluginName: 'AppLauncher',
+  plugin: 'cordova-plugin-app-launcher',
+  pluginRef: 'window.plugins.launcher',
+  repo: 'https://github.com/nchutchind/cordova-plugin-app-launcher',
+  platforms: ['Android', 'iOS']
+})
+@Injectable()
+export class AppLauncher extends IonicNativePlugin {
+  /**
+   * Check if any apps are installed that can launch via a specified URI or Package Name.
+   * @param options App Launcher options
+   * @return {Promise<any>} Returns a promise that resolves if the app is installed
+   */
+  @Cordova()
+  canLaunch(options: AppLauncherOptions): Promise<boolean> {
+    return;
+  }
+
+  /**
+   * Launches the app via a specified URI or Package Name
+   * @param options App Launcher options
+   * @return {Promise<any>} Returns a promise that resolves the launched app
+   */
+  @Cordova()
+  launch(options: AppLauncherOptions): Promise<any> {
+    return;
+  }
+}