Initialize frontend.

frontend/vite.config.ts

@@ -0,0 +1,16 @@
+import { reactRouter } from "@react-router/dev/vite";
+import tailwindcss from "@tailwindcss/vite";
+import { defineConfig } from "vite";
+import tsconfigPaths from "vite-tsconfig-paths";
+
+export default defineConfig({
+  plugins: [tailwindcss(), reactRouter(), tsconfigPaths()],
+  server: {
+    proxy: {
+      "/api": {
+        target: "http://localhost:3000",
+        changeOrigin: true,
+      },
+    },
+  },
+});