Updated npm commands, removed unused imports,

added key prop in Header.js, and introduced eslint
for linting

web/package.json

@@ -21,7 +21,8 @@
   },
   "scripts": {
     "start": "vite preview",
-    "build": "vite build"
+    "build": "npm run lint && vite build",
+    "lint": "eslint --ext .js,.jsx,.ts,.tsx src"
   },
   "eslintConfig": {
     "extends": [
@@ -42,6 +43,11 @@
     ]
   },
   "devDependencies": {
+    "eslint": "^8.53.0",
+    "eslint-plugin-import": "^2.29.0",
+    "eslint-plugin-jsx-a11y": "^6.8.0",
+    "eslint-plugin-react": "^7.33.2",
+    "eslint-plugin-unused-imports": "^3.0.0",
     "prettier": "^3.0.3"
   },
   "prettier": {