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.

.github/workflows/release.yml

@@ -34,6 +34,7 @@ jobs:
           VITE_TELEGRAM_BOT_USERNAME:
           VITE_APP_NAME: Bedolaga Cabinet
           VITE_APP_LOGO: V
+          VITE_APP_VERSION: ${{ github.ref_name }}
 
       - name: Create dist archive
         run: |