Export XML everywhere and better button text fitting

⭐️ New

• 📤 Export XML is now in all share menus: Stop & Save, swipe-to-share and timeline sharing.

🔨 Improved

• Reorganised Stop & Save menu for easier navigation.
• Text now resizes automatically in edit mode when you change a button’s size, and fits better so names display properly inside buttons.
• Various interface refinements across menus.
• General performance improvements.

🐛 Fixed

• A crash when sharing XML files.
• Text disappeared after resizing buttons.
• Crashes related to thumbnail generation and sharing.