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/createForOfIteratorHelper.js

@@ -0,0 +1,50 @@
+import unsupportedIterableToArray from "./unsupportedIterableToArray.js";
+function _createForOfIteratorHelper(r, e) {
+  var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
+  if (!t) {
+    if (Array.isArray(r) || (t = unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) {
+      t && (r = t);
+      var _n = 0,
+        F = function F() {};
+      return {
+        s: F,
+        n: function n() {
+          return _n >= r.length ? {
+            done: !0
+          } : {
+            done: !1,
+            value: r[_n++]
+          };
+        },
+        e: function e(r) {
+          throw r;
+        },
+        f: F
+      };
+    }
+    throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+  }
+  var o,
+    a = !0,
+    u = !1;
+  return {
+    s: function s() {
+      t = t.call(r);
+    },
+    n: function n() {
+      var r = t.next();
+      return a = r.done, r;
+    },
+    e: function e(r) {
+      u = !0, o = r;
+    },
+    f: function f() {
+      try {
+        a || null == t["return"] || t["return"]();
+      } finally {
+        if (u) throw o;
+      }
+    }
+  };
+}
+export { _createForOfIteratorHelper as default };