fix: Typings for express request and response properties (#1609)

Author: vonagam

packages/express/index.d.ts

@@ -1,4 +1,4 @@
-import { Application as FeathersApplication } from '@feathersjs/feathers';
+import { Application as FeathersApplication, Params as FeathersParams, HookContext } from '@feathersjs/feathers';
 import express from 'express';
 
 declare const feathersExpress: FeathersExpress;
@@ -36,3 +36,14 @@ interface FeathersExpress extends Express {
 declare namespace feathersExpress {
     type Application<T = any> = express.Express & FeathersApplication<T>;
 }
+
+declare module 'express-serve-static-core' {
+    interface Request {
+        feathers?: Partial<FeathersParams>;
+    }
+
+    interface Response {
+        data?: any;
+        hook?: HookContext;
+    }
+}