v2.5.1 - sub group management

I didn't make any changes. If you see any updates after v2.5.0, they were not made by me.
the last version of sub group management because i revert all of them #2656

New

• switcher for outbound traffic @AghayeCoder

Update & improvement

• Improved database model migration and added indexing @izzzzzi
• Completed translation for missing text @MrFazilat

Bug fixed

• fix getSubGroupClients for enable/disable and edit clients @AghayeCoder

Reports

• 
• 
• 
• 
• 
• 
• 
• 
•