implemented hub command

src/main/java/HubCommand/HubCommand.java

+package HubCommand;
+
+import com.velocitypowered.api.command.CommandSource;
+import com.velocitypowered.api.command.SimpleCommand;
+import com.velocitypowered.api.proxy.Player;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.format.NamedTextColor;
+import org.fsi.pixelcampusproxy.PixelcampusProxy;
+
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+
+public class HubCommand implements SimpleCommand {
+
+
+    @Override
+    public void execute(Invocation invocation) {
+        CommandSource source = invocation.source();
+
+        if(source instanceof Player p){
+
+            try {
+                p.createConnectionRequest(
+                        PixelcampusProxy.getProxy().getServer("lobby").orElse(null)
+                ).connect();
+
+            }catch (Exception e){
+                p.sendMessage(Component.text("Could not connect to Lobby").color(NamedTextColor.RED));
+            }
+        }
+    }
+
+    @Override
+    public List<String> suggest(Invocation invocation) {
+        return SimpleCommand.super.suggest(invocation);
+    }
+
+    @Override
+    public CompletableFuture<List<String>> suggestAsync(Invocation invocation) {
+        return SimpleCommand.super.suggestAsync(invocation);
+    }
+
+    @Override
+    public boolean hasPermission(Invocation invocation) {
+        return SimpleCommand.super.hasPermission(invocation);
+    }
+}

src/main/java/org/fsi/pixelcampusproxy/PixelcampusProxy.java

+package org.fsi.pixelcampusproxy;
+
+import HubCommand.HubCommand;
+import com.google.inject.Inject;
+import com.velocitypowered.api.command.CommandManager;
+import com.velocitypowered.api.command.CommandMeta;
+import com.velocitypowered.api.command.SimpleCommand;
+import com.velocitypowered.api.event.Subscribe;
+import com.velocitypowered.api.event.proxy.ProxyInitializeEvent;
+import com.velocitypowered.api.plugin.Plugin;
+import com.velocitypowered.api.proxy.ProxyServer;
+import org.slf4j.Logger;
+
+@Plugin(
+        id = "pixelcampusproxy",
+        name = "PixelcampusProxy",
+        version = BuildConstants.VERSION
+)
+public class PixelcampusProxy {
+
+    private static ProxyServer proxy;
+
+    @Inject
+    public PixelcampusProxy(ProxyServer proxy) {
+        this.proxy = proxy;
+    }
+
+    public static ProxyServer getProxy(){
+        return proxy;
+    }
+
+    @Inject
+    private Logger logger;
+
+    @Subscribe
+    public void onProxyInitialization(ProxyInitializeEvent event) {
+
+        CommandManager commandManager = proxy.getCommandManager();
+        CommandMeta commandMeta = commandManager.metaBuilder("hub")
+                .aliases("lobby", "l")
+                .plugin(this)
+                .build();
+
+        SimpleCommand hubCommand = new HubCommand();
+        commandManager.register(commandMeta, hubCommand);
+    }
+}

src/main/templates/org/fsi/pixelcampusproxy/BuildConstants.java

+package org.fsi.pixelcampusproxy;
+
+// The constants are replaced before compilation
+public class BuildConstants {
+
+    public static final String VERSION = "${version}";
+}