Detect Geyser connections at packet level

It is possible to use Geyser without Floodgate by configuring Geyser to
use auth-type= 'online' or 'offline'. In that scenario, floodgateService
will be either unavailable or empty.

velocity/src/main/java/com/github/games647/fastlogin/velocity/task/AsyncPremiumCheck.java

@@ -50,7 +50,8 @@ public class AsyncPremiumCheck extends JoinManagement<Player, CommandSource, Vel
     private final InboundConnection connection;
 
     public AsyncPremiumCheck(FastLoginVelocity plugin, InboundConnection connection, String username, Continuation continuation, PreLoginEvent preLoginEvent) {
-        super(plugin.getCore(), plugin.getCore().getAuthPluginHook(), plugin.getFloodgateService());
+        super(plugin.getCore(), plugin.getCore().getAuthPluginHook(), plugin.getFloodgateService(),
+                plugin.getGeyserService());
         this.plugin = plugin;
         this.connection = connection;
         this.username = username;