Add 'My Devices' feature to user subscription management

- Implemented a new command handler for displaying user devices.
- Added functionality to disconnect devices from the user's account.
- Updated subscription service to retrieve and manage device information.
- Enhanced inline keyboard to include device management options.
- Added new translations for device-related messages in English and Russian locales.

locales/en.json

@@ -35,6 +35,15 @@
   "pay_with_stars_button": "🌟 Telegram Stars",
   "connect_button": "🔗 Connect",
   "cancel_button": "❌ Cancel",
+
+  "devices_button": "📱 My Devices ({current_devices}/{max_devices})",
+  "my_devices_details": "📱 <b>My Devices ({current_devices}/{max_devices})</b>\n\n{devices}\n\nYou can disconnect a device by selecting it from the list below.\n<blockquote><i>Note: If you disconnect a device, it will be automatically connected again when you use it next. Before deleting, make sure you have deleted the subscription from the application.</i></blockquote>",
+  "no_devices_details_found_message": "📱 <b>My Devices</b>\n\nYou don't have any devices yet.\nYou have {max_devices} devices available. You can connect them by clicking the \"🔗 Connect\" button in the subscription menu.",
+  "device_details": "{index}) <b>{device_model} ({platform} {os_version})</b>\nDate connected: <b>{created_at_str}</b>\nUser Agent: <b>{user_agent}</b>\nHWID: <code>{hwid}</code>",
+  "disconnect_device_button": "🚫 Disconnect {hwid} ({index})",
+  "device_disconnected": "Device disconnected successfully.",
+  "no_devices_found": "Error loading device list.",
+
   "payment_description_subscription": "Subscription payment for {months} mo.",
   "payment_link_message": "To pay for {months} mo. subscription, click the button below:",
   "payment_successful_error_details": "✅ Payment succeeded, but an error occurred displaying details. Your subscription is active. Contact support if anything is wrong.",