BREAKING_CHANGE(core): remove legacy forwarding module in favor of route-based system

- Removed the forwarding namespace export from main index
- Removed TForwardingType and all forwarding handlers
- Consolidated route helper functions into route-helpers.ts
- All functionality is now available through the route-based system
- Users must migrate from forwarding.* imports to direct route helper imports

test/test.forwarding.ts

@@ -1,9 +1,6 @@
 import { tap, expect } from '@git.zone/tstest/tapbundle';
 import * as plugins from '../ts/plugins.js';
-import type { IForwardConfig, TForwardingType } from '../ts/forwarding/config/forwarding-types.js';
 
-// First, import the components directly to avoid issues with compiled modules
-import { ForwardingHandlerFactory } from '../ts/forwarding/factory/forwarding-factory.js';
 // Import route-based helpers
 import {
   createHttpRoute,