feat(ios-aswebauthenticationsession): add plugin (#3421)

* feat(ios-aswebauthenticationsession): add plugin

* Update index.ts

* returning string instead of any

Co-authored-by: Daniel Sogl <daniel@sogls.de>

src/@ionic-native/plugins/ios-aswebauthenticationsession-api/index.ts

@@ -0,0 +1,49 @@
+import { Injectable } from '@angular/core';
+import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
+
+/**
+ * @name ios-aswebauthenticationsession-api
+ * @description
+ * Plugin for iOS 12 ASWebAuthenticationSession API
+ *
+ * @usage
+ * ```typescript
+ * import { IosASWebauthenticationSession } from '@ionic-native/ios-aswebauthenticationsession-api/ngx';
+ *
+ *
+ * constructor(private IosASWebauthenticationSession: ios-aswebauthenticationsession-api) { }
+ *
+ * ...
+ *
+ *
+ * this.IosASWebauthenticationSession.start(callbackUrl, authorizeURL)
+ *   .then((redirectUrl: string) => console.log(redirectUrl))
+ *   .catch((error: any) => console.error(error));
+ *
+ * ```
+ */
+
+@Plugin({
+  pluginName: 'IosASWebauthenticationSession',
+  plugin: 'cordova-plugin-ios-aswebauthenticationsession-api',
+  pluginRef: 'plugins.ASWebAuthSession',
+  repo:
+    'https://github.com/jwelker110/cordova-plugin-ios-aswebauthenticationsession-api',
+  platforms: ['iOS'],
+})
+@Injectable()
+export class IosASWebauthenticationSession extends IonicNativePlugin {
+  /**
+   * This function start an authentication flow in ASWebauthenticationSession
+   * @param callbackUrl {string} Callback URL of your App
+   * @param authorizeURL {number} Authorization URL
+   * @return {Promise<string>} Returns a promise that resolves a string containing the redirect URL after finishing ASWebauthenticationSession
+   */
+  @Cordova()
+  start(
+    callbackUrl: string,
+    authorizeURL: string
+  ): Promise<string> {
+    return;
+  }
+}