don't export FirewallPolicy from middleware libraries

Author: GyulyVGC

clients/express/sample/src/index.ts

@@ -1,5 +1,5 @@
 import express from 'express'
-import {createAppGuardMiddleware, FirewallPolicy} from '@nullnet/appguard-express'
+import {createAppGuardMiddleware} from '@nullnet/appguard-express'
 
 const app = express()
 

clients/express/src/index.ts

@@ -1,2 +1 @@
-export {createAppGuardMiddleware} from './express-middleware';
-export {FirewallPolicy} from "appguard-client-common";
+export {createAppGuardMiddleware} from './express-middleware';

clients/nextjs/package-lock.json

@@ -1,2 +1 @@
 export {createAppGuardMiddleware} from './nextjs-middleware';
-export {FirewallPolicy} from "appguard-client-common";