feat: add create offices component (#525)

Fixes: #147

src/app/organization/organization.service.ts

@@ -32,6 +32,14 @@ export class OrganizationService {
     return this.http.get('/offices');
   }
 
+  /**
+   * @param {any} office Office to be created.
+   * @returns {Observable<any>}
+   */
+  createOffice(office: any): Observable<any> {
+    return this.http.post('/offices', office);
+  }
+
   /**
    * @returns {Observable<any>} Employees data
    */