feat: 添加基于pywebview的图形界面支持

新增图形界面模块webui，使用Vue 3 + Quasar + TypeScript + Tailwind CSS开发
扩展README文档说明图形界面使用方法
更新.gitignore忽略前端相关文件
添加Python版本配置文件

webui/package.json

@@ -0,0 +1 @@
+{"name":"egm-webui","version":"0.1.0","type":"module","scripts":{"dev":"vite","build":"vue-tsc && vite build","preview":"vite preview"},"dependencies":{"@quasar/extras":"^1.17.0","@quasar/vite-plugin":"^1.10.0","quasar":"^2.14.0","vue":"^3.4.0"},"devDependencies":{"@vitejs/plugin-vue":"^5.0.0","autoprefixer":"^10.4.0","postcss":"^8.4.0","sass-embedded":"^1.97.3","tailwindcss":"^3.4.0","typescript":"^5.3.0","vite":"^5.0.0","vue-tsc":"^1.8.0"}}