Add crossway api for traffic_lights

components/control_center/src/app/component/landing/landing.component.ts

@@ -1,5 +1,6 @@
 import {Component, OnInit, ViewChild} from '@angular/core';
 import {AgmMap, AgmMarker} from '@agm/core';
+import {RestService} from "../../services/rest.service";
 
 @Component({
   selector: 'app-landing',
@@ -8,7 +9,9 @@ import {AgmMap, AgmMarker} from '@agm/core';
 })
 export class LandingComponent implements OnInit {
 
-  constructor() {
+  constructor(
+    private restService: RestService
+  ) {
   }
 
   @ViewChild('map') map: AgmMap;