feat(auth): scaffold empty package with feature tag + path aliases

packages/auth/vitest.config.ts

@@ -0,0 +1,11 @@
+import path from "node:path";
+import { baseVitestConfig } from "@repo/typescript-config/vitest.base";
+
+export default {
+  ...baseVitestConfig,
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+    },
+  },
+};