Enhance Discord emoji selection with Unicode support and improved UI

- Added support for Unicode emojis in the Discord emoji selector, allowing users to search and select from a comprehensive emoji library.
- Refactored the emoji selection component to include a category sidebar and skin tone options, improving user experience and accessibility.
- Updated localization files to include new emoji-related terms and categories in both English and German.
- Introduced a new dependency on `@emoji-mart/data` for better emoji management and search functionality.
- Enhanced the overall layout and functionality of the emoji picker, ensuring a more intuitive interface for users.

apps/webui/package.json

@@ -12,6 +12,7 @@
     "prisma:generate": "prisma generate --schema=../bot/prisma/schema.prisma"
   },
   "dependencies": {
+    "@emoji-mart/data": "^1.2.1",
     "@nexumi/shared": "workspace:^",
     "@prisma/client": "^5.22.0",
     "@radix-ui/react-avatar": "^1.2.3",