feat(sms-retriever): add plugin (#3052)

* created index.ts file for sms retriver plugin wrapper for ionic native

created index.ts file for sms retriver plugin wrapper for ionic native
Plugin name : cordova-plugin-sms-retriever-manager

* resolved tslint errors

resolved tslint errors

* Update index.ts

* Update index.ts

src/@ionic-native/plugins/sms-retriever/index.ts

@@ -0,0 +1,56 @@
+import { Injectable } from '@angular/core';
+import { Cordova, IonicNativePlugin, Plugin } from '@ionic-native/core';
+
+/**
+ * @name Sms Retriever
+ * @description
+ * This plugin retrives the SMS which arrive without requiring READ permissions.
+ *
+ * @usage
+ * ```typescript
+ * import { SmsRetriever } from '@ionic-native/sms-retriever';
+ *
+ *
+ * constructor(private smsRetriever: SmsRetriever) { }
+ *
+ * ...
+ *
+ *
+ * this.smsRetriever.getAppHash()
+ *   .then((res: any) => console.log(res))
+ *   .catch((error: any) => console.error(error));
+ * this.smsRetriever.startWatching()
+ *   .then((res: any) => console.log(res))
+ *   .catch((error: any) => console.error(error));
+ *
+ * ```
+ */
+@Plugin({
+  pluginName: 'SmsRetriever',
+  plugin: 'cordova-plugin-sms-retriever-manager',
+  pluginRef: 'cordova.plugins.smsRetriever',
+  repo: 'https://github.com/hanatharesh2712/ionic-native-sms-retriever-plugin-master',
+  install: 'ionic cordova plugin add cordova-plugin-sms-retriever-manager --variable PLAY_SERVICES_VERSION="15.0.1"',
+  installVariables: ['PLAY_SERVICES_VERSION'],
+  platforms: ['Android']
+})
+@Injectable()
+export class SmsRetriever extends IonicNativePlugin {
+ /**
+  * This function start wathching message arrive event and retrive message text.
+  * @return {Promise<string>} Returns a promise that resolves when retrives SMS text or TIMEOUT after 5 min.
+  */
+  @Cordova()
+  startWatching(): Promise<string> {
+    return;
+  }
+
+ /**
+  * This function is to get hash string of APP.
+  * @return {Promise<string>} Returns a promise that resolves when successfully generate hash of APP.
+  */
+  @Cordova()
+  getAppHash(): Promise<string> {
+    return;
+  }
+}