create cylinder

client/src/app/shared/api.service.ts

@@ -111,4 +111,8 @@ export class ApiService {
   getActivities(): Observable<any[]> {
     return this.http.get<any[]>('api/user/activities');
   }
+
+  createCylinder(data: any) {
+    return this.http.post<ICylinder>('api/cylinder', data);
+  }
 }