✨ feat(i18n): Add i18next and lobe-i18n internationalization configuration files and update dependencies

This commit introduces new configuration files for internationalization,
deletes one file, modifies existing files, and adds new files. The changes
also involve importing dependencies and updating app and document pages.
Additional libraries and modules are used in a React application. The Header
component is modified, the index page is updated for server-side translations,
and the tsconfig.json file is modified.

Description:
- Added configuration files for internationalization
- Deleted one file
- Modified existing files
- Added new files
- Imported dependencies
- Updated app and document pages
- Used additional libraries and modules in a React application
- Modified the Header component
- Updated the index page for server-side translations
- Modified the tsconfig.json file.

tsconfig.json

@@ -1,4 +1,5 @@
 {
+  "$schema": "https://json.schemastore.org/tsconfig",
   "compilerOptions": {
     "target": "ESNext",
     "lib": ["dom", "dom.iterable", "esnext"],
@@ -21,5 +22,5 @@
     }
   },
   "exclude": ["node_modules"],
-  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"]
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.d.ts", "**/*.tsx"]
 }