feat(ui): changed Markdown rendering library

- Markdown render library changed to [react-markdown](https://github.com/remarkjs/react-markdown)
- Added basic hightling via [rehype-highlight](https://github.com/rehypejs/rehype-highlight)

Signed-off-by: minicx <minicx@disroot.org>

ui/package.json

@@ -18,13 +18,14 @@
     "clsx": "^2.1.0",
     "langchain": "^0.1.30",
     "lucide-react": "^0.363.0",
-    "markdown-to-jsx": "^7.6.2",
     "next": "14.1.4",
     "next-themes": "^0.3.0",
     "react": "^18",
     "react-dom": "^18",
+    "react-markdown": "^9.0.1",
     "react-text-to-speech": "^0.14.5",
     "react-textarea-autosize": "^8.5.3",
+    "rehype-highlight": "^7.0.1",
     "sonner": "^1.4.41",
     "tailwind-merge": "^2.2.2",
     "yet-another-react-lightbox": "^3.17.2",