feat (clients) : add client identifier

fixes: #260

src/app/clients/common-resolvers/client-identifier-template.resolver.ts

@@ -0,0 +1,30 @@
+/** Angular Imports */
+import { Injectable } from '@angular/core';
+import { Resolve, ActivatedRouteSnapshot } from '@angular/router';
+
+/** rxjs Imports */
+import { Observable } from 'rxjs';
+
+
+/** Custom Services */
+import { ClientsService } from '../clients.service';
+
+/**
+ * Client Identifier Template resolver.
+ */
+@Injectable()
+export class ClientIdentifierTemplateResolver implements Resolve<Object> {
+    /**
+     * @param {ClientsService} ClientsService Clients service.
+     */
+    constructor(private clientsService: ClientsService) { }
+    /**
+     * Returns the Client Identities data.
+     * @returns {Observable<any>}
+     */
+    resolve(route: ActivatedRouteSnapshot): Observable<any> {
+        const clientId = route.parent.paramMap.get('clientId');
+        return this.clientsService.getClientIdentifierTemplate(clientId);
+    }
+}
+