add show total users in rocket chat server

src/app/services/http.service.ts

@@ -0,0 +1,26 @@
+import { HttpClient, HttpHeaderResponse, HttpHeaders } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { environment } from 'src/environments/environment';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class HttpService {
+
+  constructor(private http:HttpClient) { }
+
+  post(serviceName:string, data:any){
+    const headers = new HttpHeaders();
+    const options = {header: headers, withCredentials: false};
+    const url = environment.apiChatUrl+serviceName;
+    const body = {"user": "admin","password": "tabteste@006"};
+
+    return this.http.post(url, /* JSON.stringify( */data/* ), options */)
+  }
+
+  get(serviceName:string, options:any){
+    const url = environment.apiChatUrl+serviceName;
+    return this.http.get(url, options);
+  }
+}
+