fix(host handling): update

ts/smartnginx.classes.smartnginx.ts

@@ -26,10 +26,22 @@ export class SmartNginx {
    * add a host
    * @param nginxHostArg
    */
-  addHost(nginxHostArg: NginxHost) {
-    this.hosts.push(nginxHostArg);
+  addHost(hostNameArg: string, destinationIp: string): NginxHost {
+    const nginxHost = new NginxHost(this, {
+      hostName: hostNameArg,
+      destination: destinationIp
+    })
+    this.hosts.push(nginxHost);
+    return nginxHost;
   }
 
+  getNginxHostByHostName(hostNameArg: string): NginxHost {
+    return this.hosts.find(nginxHost => {
+      return nginxHost.hostName === hostNameArg;
+    })
+  }
+
+
   /**
    * listHosts
    */