feat: Create WelcomeItem component for displaying welcome messages
feat: Implement various icon components for the welcome section
feat: Add theme management functionality with multiple color themes
feat: Integrate internationalization support with Spanish and English locales
feat: Set up Vue Router with authentication callback handling
feat: Implement authentication service for Discord OAuth2 login
feat: Create bot service for fetching bot statistics and information
feat: Add AuthCallback view for handling authentication responses
chore: Configure Vite for development and production environments
