refactor: update ESLint configuration and remove unused dependencies

- Replaced Nuxt ESLint configuration with Antfu's ESLint config.
- Removed 'nuxt-visitors' module from Nuxt configuration.
- Added linting scripts to package.json for easier code quality checks.
- Introduced a new API endpoint for fetching weather data from OpenWeather.
- Enhanced chat types with new enums and properties for better state management.
- Added OpenWeather response types for improved type safety.
- Updated social links in types/index.ts to include an email contact.

package.json

@@ -7,9 +7,12 @@
     "dev": "nuxt dev",
     "generate": "nuxt generate",
     "preview": "nuxt preview",
-    "postinstall": "nuxt prepare"
+    "postinstall": "nuxt prepare",
+    "lint": "eslint .",
+    "lint:fix": "eslint --fix ."
   },
   "dependencies": {
+    "@antfu/eslint-config": "^5.2.1",
     "@iconify-json/devicon": "^1.2.43",
     "@iconify-json/logos": "^1.2.9",
     "@iconify-json/lucide": "^1.2.66",