chore: 添加初始项目文件和依赖项

初始化项目，添加 favicon.ico、screenshot.png 等静态资源文件，以及 Vue、TailwindCSS 等依赖项。配置了 Vite 和 PostCSS，并生成了基本的项目结构。

package.json

@@ -0,0 +1,21 @@
+{
+  "name": "modern-password-generator",
+  "version": "1.0.0",
+  "description": "一个安全、现代、易用的密码生成工具",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tailwindcss/forms": "^0.5.10",
+    "vue": "^3.3.4"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "^4.2.3",
+    "autoprefixer": "^10.4.14",
+    "postcss": "^8.4.24",
+    "tailwindcss": "^3.3.2",
+    "vite": "^4.3.9"
+  }
+}