feat(server): add HTTP file-based routing support

- Add file-based HTTP routing with httpDir and httpPrefix config options
- Create defineHttp<TBody>() helper for type-safe route definitions
- Support dynamic routes with [param].ts file naming convention
- Add CORS support for cross-origin requests
- Allow merging file routes with inline http config
- RPC server now supports attaching to existing HTTP server via server option
- Add comprehensive documentation for HTTP routing

packages/framework/server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@esengine/server",
-  "version": "4.0.0",
+  "version": "4.1.0",
   "description": "Game server framework for ESEngine with file-based routing",
   "type": "module",
   "main": "./dist/index.js",