feat: added vpn key to subscription settings page (#1717)

* added subscription key display element to subscription management page

* refactrored KeySubscription item to a new page

* minor fix

* changed PageShareDrawer into PageShareConnection

* added back button

* Removed deprecated ShareConnectionDrawer and migrated to PageShareConnection

* fixed issue when show-connection settings button was not working

* deleted empty lines

* minor fix

client/ui/controllers/pageController.h

@@ -38,6 +38,7 @@ namespace PageLoader
         PageSettingsApiInstructions,
         PageSettingsApiNativeConfigs,
         PageSettingsApiDevices,
+        PageSettingsApiSubscriptionKey,
         PageSettingsKillSwitchExceptions,
         
         PageServiceSftpSettings,
@@ -71,6 +72,7 @@ namespace PageLoader
         PageProtocolAwgClientSettings,
 
         PageShareFullAccess,
+        PageShareConnection,
 
         PageDevMenu
     };