message: Expose the `use` operator
  Export method to use externally.
diff: @@ -5,6 +5,7 @@ export * from './middlewares/error.middleware';
  export * from './middlewares/logger.middleware';
  export * from './operators/matchType.operator';
  export * from './operators/matchPath.operator';
  +export * from './operators/use.operator';
  export * from './http.interface';
  export * from './http.listener';
  export { HttpError } from './util/error.util';
  