Add project files

vitest.config.ts

@@ -0,0 +1,17 @@
+import { defineConfig } from "vitest/config";
+import react from "@vitejs/plugin-react";
+import { resolve } from "path";
+
+export default defineConfig({
+  plugins: [react()],
+  test: {
+    environment: "happy-dom",
+    include: ["src/**/*.{test,spec}.{ts,tsx}"],
+    globals: true,
+  },
+  resolve: {
+    alias: {
+      "@": resolve(__dirname, "./src"),
+    },
+  },
+});