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.

eslint.config.mjs

@@ -1,6 +1,5 @@
-// @ts-check
-import withNuxt from './.nuxt/eslint.config.mjs'
+import antfu from '@antfu/eslint-config'
 
-export default withNuxt(
+export default antfu(
   // Your custom configs here
-)
+)