feat: add route guard and meta support + ci upgrade

[nu-xin]

Changes

Features

• Add guard support for route-level authorization
• Add meta support for route metadata
• Add useParams, useLocation, useMatched hooks

CI

• Upgrade Node.js version from 16.x to 20.x/22.x
• Update GitHub Actions to latest versions
• Switch from npm to pnpm commands

Usage

Route Guard

const routes = [
  {
    path: "/admin",
    guard: (to, from, ctx) => {
      if (!isAuthenticated) return false;
      return true;
    },
    meta: { requiresAuth: true },
    children: [...]
  }
];

New Hooks

import { useParams, useLocation, useMatched } from "@native-router/react";

function Profile() {
  const { id } = useParams<{ id: string }>();
  const location = useLocation();
  const matched = useMatched();
  // ...
}