[AltStore] Adds basic Patreon integration

- Lists beta versions of apps when signed in to Patreon
- Lists names of Patrons with the Credits benefit

AltStore/LaunchViewController.swift

@@ -45,6 +45,7 @@ extension LaunchViewController
         super.finishLaunching()
         
         AppManager.shared.update()
+        PatreonAPI.shared.refreshPatreonAccount()
         
         self.performSegue(withIdentifier: "finishLaunching", sender: nil)
     }