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/@babel/runtime/helpers/esm/asyncIterator.js

@@ -0,0 +1,45 @@
+function _asyncIterator(r) {
+  var n,
+    t,
+    o,
+    e = 2;
+  for ("undefined" != typeof Symbol && (t = Symbol.asyncIterator, o = Symbol.iterator); e--;) {
+    if (t && null != (n = r[t])) return n.call(r);
+    if (o && null != (n = r[o])) return new AsyncFromSyncIterator(n.call(r));
+    t = "@@asyncIterator", o = "@@iterator";
+  }
+  throw new TypeError("Object is not async iterable");
+}
+function AsyncFromSyncIterator(r) {
+  function AsyncFromSyncIteratorContinuation(r) {
+    if (Object(r) !== r) return Promise.reject(new TypeError(r + " is not an object."));
+    var n = r.done;
+    return Promise.resolve(r.value).then(function (r) {
+      return {
+        value: r,
+        done: n
+      };
+    });
+  }
+  return AsyncFromSyncIterator = function AsyncFromSyncIterator(r) {
+    this.s = r, this.n = r.next;
+  }, AsyncFromSyncIterator.prototype = {
+    s: null,
+    n: null,
+    next: function next() {
+      return AsyncFromSyncIteratorContinuation(this.n.apply(this.s, arguments));
+    },
+    "return": function _return(r) {
+      var n = this.s["return"];
+      return void 0 === n ? Promise.resolve({
+        value: r,
+        done: !0
+      }) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments));
+    },
+    "throw": function _throw(r) {
+      var n = this.s["return"];
+      return void 0 === n ? Promise.reject(r) : AsyncFromSyncIteratorContinuation(n.apply(this.s, arguments));
+    }
+  }, new AsyncFromSyncIterator(r);
+}
+export { _asyncIterator as default };