Achievement Manager Update

[ FIXES ]

• Fixed an issue where playtime was not working correctly for some users.

• Optimized game synchronization performance.

• Resolved a bug where the game synchronizer would occasionally miscalculate statistics.

[ NEW ]

• Added progress display for stat-based achievements.

• Games can now be hidden via the right-click context menu. A new filter has been added to view hidden games.

• Introduced an "Activity" tab to view achievement history. Includes options to filter by date.

• Games can now be sorted alphabetically.