feat(normalsub): Implement flexible, path-based subscription URLs

Refactors the NormalSub feature to move away from a hardcoded `/sub/normal/` path and a restrictive single-word subpath. This change introduces support for multi-segment, slash-separated subpaths (e.g., `path/to/resource`), providing greater flexibility for creating descriptive and structured subscription URLs.

core/scripts/hysteria2/wrapper_uri.py

@@ -117,7 +117,7 @@ def process_users(target_usernames: List[str]) -> List[Dict[str, Any]]:
             user_output["nodes"].append({"name": node_name, "uri": uri})
         
         if ns_domain and ns_port and ns_subpath:
-            user_output["normal_sub"] = f"https://{ns_domain}:{ns_port}/{ns_subpath}/sub/normal/{auth_password}#{username}"
+            user_output["normal_sub"] = f"https://{ns_domain}:{ns_port}/{ns_subpath}/{auth_password}#{username}"
 
         results.append(user_output)