Improve packaging (#328)

* Add gpgui-helper (#326)

* Add packaging

apps/gpgui-helper/vite.config.ts

@@ -0,0 +1,30 @@
+import react from "@vitejs/plugin-react";
+import { resolve } from "path";
+import { defineConfig } from "vite";
+
+// https://vitejs.dev/config/
+export default defineConfig(async () => {
+  return {
+    plugins: [react()],
+
+    // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
+    //
+    // 1. prevent vite from obscuring rust errors
+    clearScreen: false,
+    // 2. tauri expects a fixed port, fail if that port is not available
+    server: {
+      port: 1421,
+      strictPort: true,
+    },
+    // 3. to make use of `TAURI_DEBUG` and other env variables
+    // https://tauri.app/v1/api/config#buildconfig.beforedevcommand
+    envPrefix: ["VITE_", "TAURI_"],
+    build: {
+      rollupOptions: {
+        input: {
+          main: resolve(__dirname, "index.html"),
+        },
+      },
+    },
+  };
+});