Add eslint and friends explicitly

This came via CRACO previously, but now must be installed
separately

Author: rajadain

src/app/package.json

@@ -59,6 +59,8 @@
   },
   "devDependencies": {
     "@vitejs/plugin-react": "^2.0.1",
+    "eslint": "^8.25.0",
+    "eslint-config-react-app": "^7.0.1",
     "prettier": "^2.6.2",
     "vite": "^3.0.7"
   }