Add VITE_APP_VERSION environment variable and integrate versioning into the application

- Introduced VITE_APP_VERSION in Dockerfile and GitHub workflows to capture the version from Git tags.
- Updated vite.config.ts to define a global constant for the app version.
- Enhanced Layout component to display the app version in the footer for admin pages.
- Added logic to conditionally render the LanguageSwitcher based on active promotions.

Dockerfile

@@ -18,12 +18,14 @@ ARG VITE_API_URL=/api
 ARG VITE_TELEGRAM_BOT_USERNAME
 ARG VITE_APP_NAME=Cabinet
 ARG VITE_APP_LOGO=V
+ARG VITE_APP_VERSION
 
 # Set environment variables for build
 ENV VITE_API_URL=$VITE_API_URL
 ENV VITE_TELEGRAM_BOT_USERNAME=$VITE_TELEGRAM_BOT_USERNAME
 ENV VITE_APP_NAME=$VITE_APP_NAME
 ENV VITE_APP_LOGO=$VITE_APP_LOGO
+ENV VITE_APP_VERSION=$VITE_APP_VERSION
 
 # Build the application
 RUN npm run build