feat: add tellers component (#520)

Fixes: #159

src/app/organization/organization.service.ts

@@ -1,6 +1,6 @@
 /** Angular Imports */
 import { Injectable } from '@angular/core';
-import { HttpClient, HttpParams } from '@angular/common/http';
+import { HttpClient } from '@angular/common/http';
 
 /** rxjs Imports */
 import { Observable } from 'rxjs';
@@ -60,4 +60,11 @@ export class OrganizationService {
     return this.http.get('/adhocquery');
   }
 
+  /**
+   * @returns {Observable<any>} Tellers data
+   */
+  getTellers(): Observable<any> {
+    return this.http.get('/tellers');
+  }
+
 }