feat: add cashiers list page (#888)

Fixes: #757

src/app/organization/tellers/common-resolvers/teller.resolver.ts

@@ -0,0 +1,31 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot } from '@angular/router';
+
+/** rxjs Imports */
+import { Observable } from 'rxjs';
+
+/** Custom Services */
+import { OrganizationService } from 'app/organization/organization.service';
+
+/**
+ * Teller data resolver.
+ */
+@Injectable()
+export class TellerResolver implements Resolve<Object> {
+
+  /**
+   * @param {OrganizationService} organizationService Organization service.
+   */
+  constructor(private organizationService: OrganizationService) {}
+
+  /**
+   * Returns the teller data.
+   * @returns {Observable<any>}
+   */
+  resolve(route: ActivatedRouteSnapshot): Observable<any> {
+    const tellerId = route.paramMap.get('id');
+    return this.organizationService.getTeller(tellerId);
+  }
+
+}