feat: setup barrelsby for automatic barrel file generation

Add barrelsby as a dev dependency with a `generate-barrels` npm script and a `barrelesby.json` config targeting `./src`. This automates creation of barrel/index files to simplify imports across the project.

package.json

@@ -7,7 +7,8 @@
     "build": "next build",
     "start": "next start",
     "lint": "eslint",
-    "lint:fix": "eslint --fix"
+    "lint:fix": "eslint --fix", 
+    "generate-barrels": "barrelsby --delete"
   },
   "dependencies": {
     "next": "16.2.7",
@@ -19,6 +20,7 @@
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
+    "barrelsby": "^2.8.1",
     "eslint": "^9",
     "eslint-config-next": "16.2.7",
     "tailwindcss": "^4",