feat: add admin frontend template

Signed-off-by: Ryan Wang <i@ryanc.cc>

admin-frontend/vite.config.ts

@@ -0,0 +1,34 @@
+import {fileURLToPath, URL} from "url";
+
+import {defineConfig} from "vite";
+import vue from "@vitejs/plugin-vue";
+import vueJsx from "@vitejs/plugin-vue-jsx";
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [vue(), vueJsx()],
+  resolve: {
+    alias: {
+      "@": fileURLToPath(new URL("./src", import.meta.url)),
+    },
+  },
+  build: {
+    outDir: fileURLToPath(new URL("../src/main/resources/admin", import.meta.url)),
+    emptyOutDir: true,
+    lib: {
+      entry: "src/index.ts",
+      name: "PluginTemplate",
+      formats: ["iife"],
+      fileName: () => "halo-plugin-template.js",
+    },
+    rollupOptions: {
+      external: ["vue", "@halo-dev/shared", "@halo-dev/components"],
+      output: {
+        globals: {
+          vue: "Vue",
+          "@halo-dev/components": "components",
+        },
+      },
+    },
+  },
+});