v1.2.0 — UI optimization, i18n, and Calibre-Web shelf selection

v1.2.0 - UI optimization, i18n, and Calibre-Web shelf selection

Added

• Added a new sidebar navigation to improve the overall layout and page structure.
• Added internationalization support (i18n) for the web interface.
• Added the ability to select a destination shelf in Calibre-Web before starting a download or request.

Improved

• Improved the homepage layout and UI styling for a cleaner and more user-friendly experience.
• Enhanced the integration between the frontend and backend for handling destination shelf selection.
• Expanded the documentation for save path and shelf-related configuration.

Fixed

• Fixed issues in the i18n implementation so translations are applied correctly.
• Fixed the shelf assignment flow so imported books are placed in the correct Calibre-Web shelf.
• Improved qBittorrent handling with retry logic for shelf-related downloads.