Add internationalization support with astro-i18next integration

- Implemented astro-i18next for multi-language support, including English, Dutch, and Italian.
- Configured default locale and language fallback settings.
- Defined routes for localized content in the configuration.
- Updated package.json and package-lock.json to include new dependencies for i18next and related plugins.

node_modules/cross-fetch/README.md

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+cross-fetch<br>
+[![NPM Version](https://img.shields.io/npm/v/cross-fetch.svg?branch=main)](https://www.npmjs.com/package/cross-fetch)
+[![Downloads Per Week](https://img.shields.io/npm/dw/cross-fetch.svg?color=blue)](https://www.npmjs.com/package/cross-fetch)
+[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)
+[![CI](https://github.com/lquixada/cross-fetch/actions/workflows/ci.yml/badge.svg)](https://github.com/lquixada/cross-fetch/actions/workflows/ci.yml)
+[![codecov](https://codecov.io/gh/lquixada/cross-fetch/branch/main/graph/badge.svg)](https://codecov.io/gh/lquixada/cross-fetch)
+================
+
+Universal WHATWG Fetch API for Node, Browsers, Workers and React Native. The scenario that cross-fetch really shines is when the same JavaScript codebase needs to run on different platforms.
+
+- **Platform agnostic**: browsers, Node or React Native
+- **Optional polyfill**: it's up to you if something is going to be added to the global object or not
+- **Simple interface**: no instantiation, no configuration and no extra dependency
+- **WHATWG compliant**: it works the same way wherever your code runs
+- **TypeScript support**: better development experience with types.
+- **Worker support**: works on different types of workers such as Service Workers and CloudFlare Workers
+
+
+* * *
+
+## Table of Contents
+
+- [Table of Contents](#table-of-contents)
+- [Install](#install)
+- [Usage](#usage)
+- [Demo \& API](#demo--api)
+- [FAQ](#faq)
+    - [Yet another fetch library?](#yet-another-fetch-library)
+    - [Why polyfill might not be a good idea?](#why-polyfill-might-not-be-a-good-idea)
+    - [How does cross-fetch work?](#how-does-cross-fetch-work)
+- [Who's Using It?](#whos-using-it)
+- [Thanks](#thanks)
+- [License](#license)
+- [Author](#author)
+
+* * *
+
+## Install
+
+```sh
+npm install --save cross-fetch
+```
+
+As a [ponyfill](https://github.com/sindresorhus/ponyfill) (imports locally):
+
+```javascript
+// Using ES6 modules with Babel or TypeScript
+import fetch from 'cross-fetch';
+
+// Using CommonJS modules
+const fetch = require('cross-fetch');
+```
+
+As a polyfill (installs globally):
+
+```javascript
+// Using ES6 modules
+import 'cross-fetch/polyfill';
+
+// Using CommonJS modules
+require('cross-fetch/polyfill');
+```
+
+
+The CDN build is also available on unpkg:
+
+```html
+<script src="//unpkg.com/cross-fetch/dist/cross-fetch.js"></script>
+```
+
+This adds the fetch function to the window object. Note that this is not UMD compatible.
+
+
+* * *
+
+## Usage
+
+With [promises](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise):
+
+```javascript
+import fetch from 'cross-fetch';
+// Or just: import 'cross-fetch/polyfill';
+
+fetch('//api.github.com/users/lquixada')
+  .then(res => {
+    if (res.status >= 400) {
+      throw new Error("Bad response from server");
+    }
+    return res.json();
+  })
+  .then(user => {
+    console.log(user);
+  })
+  .catch(err => {
+    console.error(err);
+  });
+```
+
+With [async/await](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function):
+
+```javascript
+import fetch from 'cross-fetch';
+// Or just: import 'cross-fetch/polyfill';
+
+(async () => {
+  try {
+    const res = await fetch('//api.github.com/users/lquixada');
+    
+    if (res.status >= 400) {
+      throw new Error("Bad response from server");
+    }
+    
+    const user = await res.json();
+  
+    console.log(user);
+  } catch (err) {
+    console.error(err);
+  }
+})();
+```
+
+## Demo & API
+
+You can find a comprehensive doc at [Github's fetch](https://github.github.io/fetch/) page. If you want to play with cross-fetch, check our [**JSFiddle playground**](https://jsfiddle.net/lquixada/3ypqgacp/).
+
+> **Tip**: Run the fiddle on various browsers and with different settings (for instance: cross-domain requests, wrong urls or text requests). Don't forget to open the console in the test suite page and play around.
+
+
+## FAQ
+
+#### Yet another fetch library?
+
+I did a lot of research in order to find a fetch library that could be simple, cross-platform and provide polyfill as an option. There's a plethora of libs out there but none could match those requirements.
+
+#### Why polyfill might not be a good idea?
+
+In a word? Risk. If the spec changes in the future, it might be problematic to debug. Read more about it on [sindresorhus's ponyfill](https://github.com/sindresorhus/ponyfill#how-are-ponyfills-better-than-polyfills) page. It's up to you if you're fine with it or not.
+
+#### How does cross-fetch work?
+
+Just like isomorphic-fetch, it is just a proxy. If you're in node, it delivers you the [node-fetch](https://github.com/bitinn/node-fetch/) library, if you're in a browser or React Native, it delivers you the github's [whatwg-fetch](https://github.com/github/fetch/). The same strategy applies whether you're using polyfill or ponyfill.
+
+
+## Who's Using It?
+
+|[![The New York Times](./docs/images/logo-nytimes.png)](https://www.nytimes.com/)|[![Apollo GraphQL](./docs/images/logo-apollo.png)](https://github.com/apollographql/apollo-client/)|[![Facebook](./docs/images/logo-facebook.png)](https://github.com/facebook/fbjs/)|[![Swagger](./docs/images/logo-swagger.png)](https://swagger.io/)|[![VulcanJS](./docs/images/logo-vulcanjs.png)](http://vulcanjs.org)|[![graphql-request](./docs/images/logo-graphql-request.png)](https://github.com/prisma/graphql-request)|
+|:---:|:---:|:---:|:---:|:---:|:---:|
+|The New York Times|Apollo GraphQL|Facebook|Swagger|VulcanJS|graphql-request|
+
+
+## Thanks
+
+Heavily inspired by the works of [matthew-andrews](https://github.com/matthew-andrews). Kudos to him!
+
+
+## License
+
+cross-fetch is licensed under the [MIT license](https://github.com/lquixada/cross-fetch/blob/main/LICENSE) © [Leonardo Quixadá](https://twitter.com/lquixada/)
+
+
+## Author
+
+|[![@lquixada](https://avatars0.githubusercontent.com/u/195494?v=4&s=96)](https://github.com/lquixada)|
+|:---:|
+|[@lquixada](http://www.github.com/lquixada)|