feat(lint): add ESLint configuration for admin and storefront applications

- Introduced eslint.config.mjs files for both admin and storefront to extend Next.js linting rules.
- Updated package.json files to replace the default Next.js lint command with a direct ESLint command for improved linting control.

apps/admin/eslint.config.mjs

@@ -0,0 +1,12 @@
+import { dirname } from "path";
+import { fileURLToPath } from "url";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const compat = new FlatCompat({ baseDirectory: __dirname });
+
+const config = [
+  ...compat.extends("next/core-web-vitals", "next/typescript"),
+  { ignores: [".next/**", "node_modules/**"] },
+];
+export default config;

apps/admin/package.json

@@ -6,7 +6,7 @@
     "dev": "next dev --port 3001",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint",
+    "lint": "eslint .",
     "type-check": "tsc --noEmit"
   },
   "dependencies": {