introduce gui based on tauri (#52)

easytier-gui/src/vite-env.d.ts

@@ -0,0 +1,7 @@
+/// <reference types="vite/client" />
+
+declare module "*.vue" {
+  import type { DefineComponent } from "vue";
+  const component: DefineComponent<{}, {}, any>;
+  export default component;
+}