Fix game save loss equipment data issue

Fix equipment loss issues caused by game save crashes or computer restarts.

Added a 'View Backup Archive' button and added a 'View Backup Archive' button in the 'Select Archive' interface.

Previously, the game would save 30 backup saves. If you encounter a problem of losing equipment data due to crashes, you can select a previous save from the backup save and retrieve the equipment data.

At present, it is normal for the backup save to display a game duration of 0. Previously, the backup save did not record the game duration, so the game progress can be judged based on the save time.