fix: auto connect for 1.20+ (#316)

app/assets/js/processbuilder.js

@@ -307,12 +307,17 @@ class ProcessBuilder {
 
     _processAutoConnectArg(args){
         if(ConfigManager.getAutoConnect() && this.server.rawServer.autoconnect){
+            if(mcVersionAtLeast('1.20', this.server.rawServer.minecraftVersion)){
+                args.push('--quickPlayMultiplayer')
+                args.push(`${this.server.hostname}:${this.server.port}`)
+            } else {
                 args.push('--server')
                 args.push(this.server.hostname)
                 args.push('--port')
                 args.push(this.server.port)
             }
         }
+    }
 
     /**
      * Construct the argument array that will be passed to the JVM process.