feat: Add initial styles and pages for the application

- Created main.css to include Tailwind CSS and PrimeIcons.
- Added download.vue page with a simple heading.
- Implemented index.vue page structure with multiple sections and basic styling.

Co-authored-by: xudeyu444 <tai_365@qq.com>
Co-authored-by: Sylvanysc <1915657537@qq.com>

package.json

@@ -13,10 +13,20 @@
     "@nuxt/eslint": "1.3.0",
     "@nuxt/icon": "1.12.0",
     "@nuxt/image": "1.10.0",
+    "@primeuix/themes": "^1.1.1",
+    "@primevue/forms": "^4.3.4",
+    "@tailwindcss/vite": "^4.1.6",
     "eslint": "^9.0.0",
     "nuxt": "^3.17.2",
+    "primeicons": "^7.0.0",
+    "primevue": "^4.3.4",
+    "tailwindcss": "^4.1.6",
     "vue": "^3.5.13",
     "vue-router": "^4.5.1"
   },
-  "packageManager": "pnpm@10.2.1+sha512.398035c7bd696d0ba0b10a688ed558285329d27ea994804a52bad9167d8e3a72bcb993f9699585d3ca25779ac64949ef422757a6c31102c12ab932e5cbe5cc92"
+  "packageManager": "pnpm@10.2.1+sha512.398035c7bd696d0ba0b10a688ed558285329d27ea994804a52bad9167d8e3a72bcb993f9699585d3ca25779ac64949ef422757a6c31102c12ab932e5cbe5cc92",
+  "devDependencies": {
+    "@primevue/nuxt-module": "^4.3.4",
+    "vite-svg-loader": "^5.1.0"
+  }
 }