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/i18next-browser-languagedetector/package.json

@@ -0,0 +1,87 @@
+{
+  "name": "i18next-browser-languagedetector",
+  "version": "7.2.2",
+  "description": "language detector used in browser environment for i18next",
+  "main": "./dist/cjs/i18nextBrowserLanguageDetector.js",
+  "module": "./dist/esm/i18nextBrowserLanguageDetector.js",
+  "types": "./index.d.mts",
+  "exports": {
+    "./package.json": "./package.json",
+    ".": {
+      "types": {
+        "require": "./index.d.ts",
+        "import": "./index.d.mts"
+      },
+      "module": "./dist/esm/i18nextBrowserLanguageDetector.js",
+      "import": "./dist/esm/i18nextBrowserLanguageDetector.js",
+      "require": "./dist/cjs/i18nextBrowserLanguageDetector.js",
+      "default": "./dist/esm/i18nextBrowserLanguageDetector.js"
+    },
+    "./cjs": {
+      "types": "./index.d.ts",
+      "default": "./dist/cjs/i18nextBrowserLanguageDetector.js"
+    },
+    "./esm": {
+      "types": "./index.d.mts",
+      "default": "./dist/esm/i18nextBrowserLanguageDetector.js"
+    }
+  },
+  "keywords": [
+    "i18next",
+    "i18next-languageDetector"
+  ],
+  "homepage": "https://github.com/i18next/i18next-browser-languageDetector",
+  "bugs": "https://github.com/i18next/i18next-browser-languageDetector/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/i18next/i18next-browser-languageDetector.git"
+  },
+  "dependencies": {
+    "@babel/runtime": "^7.23.2"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.23.3",
+    "@babel/plugin-transform-runtime": "^7.23.3",
+    "@babel/preset-env": "^7.23.3",
+    "@babel/eslint-parser": "^7.23.3",
+    "babel-polyfill": "^6.26.0",
+    "babelify": "^10.0.0",
+    "browserify": "17.0.0",
+    "browserify-istanbul": "3.0.1",
+    "chai": "4.3.10",
+    "coveralls": "3.1.1",
+    "cpy-cli": "^5.0.0",
+    "dtslint": "^4.2.1",
+    "eslint": "8.53.0",
+    "eslint-config-airbnb": "19.0.4",
+    "expect.js": "0.3.1",
+    "i18next": "23.7.1",
+    "mkdirp": "3.0.1",
+    "mocha": "10.2.0",
+    "rimraf": "5.0.5",
+    "rollup": "^2.79.1",
+    "@rollup/plugin-babel": "^5.3.1",
+    "@rollup/plugin-node-resolve": "^14.1.0",
+    "rollup-plugin-terser": "^7.0.2",
+    "tslint": "^5.20.1",
+    "tsd": "0.29.0",
+    "typescript": "5.1.3",
+    "yargs": "17.7.2"
+  },
+  "scripts": {
+    "lint": "eslint src",
+    "pretest": "npm run lint && npm run test:typescript && npm run test:typescript:noninterop",
+    "test": "npm run build && mocha test -R spec --exit",
+    "test:typescript": "tslint --project tsconfig.json && tsd",
+    "test:typescript:noninterop": "tslint --project tsconfig.nonEsModuleInterop.json",
+    "build": "rimraf dist && rollup -c && echo '{\"type\":\"module\"}' > dist/esm/package.json  && cpy \"./dist/umd/*.js\" ./",
+    "fix_dist_package": "node -e 'console.log(`{\"type\":\"module\",\"version\":\"${process.env.npm_package_version}\"}`)' > dist/esm/package.json",
+    "preversion": "npm run test && npm run build && git push",
+    "postversion": "npm run fix_dist_package && git push && git push --tags"
+  },
+  "tsd": {
+    "directory": "test/typescript"
+  },
+  "author": "Jan Mühlemann <jan.muehlemann@gmail.com> (https://github.com/jamuhl)",
+  "license": "MIT"
+}