feat(unocss): 添加组件类型声明并扩展unocss配置

添加fg-navbar组件类型声明文件
扩展unocss配置，新增安全区域间距规则、主题色配置及常用快捷类

src/types/components.d.ts

@@ -0,0 +1,12 @@
+/* eslint-disable */
+/* prettier-ignore */
+// @ts-nocheck
+// Generated by vite-plugin-uni-components
+// Read more: https://github.com/vuejs/core/pull/3399
+export {}
+
+declare module 'vue' {
+  export interface GlobalComponents {
+    FgNavbar: typeof import('./../components/fg-navbar/fg-navbar.vue')['default']
+  }
+}