Add convenience connectWithIndication() method.

api/src/main/java/com/velocitypowered/api/proxy/ConnectionRequestBuilder.java

@@ -24,6 +24,13 @@ public interface ConnectionRequestBuilder {
      */
     CompletableFuture<Result> connect();
 
+    /**
+     * Initiates the connection to the remote server and emits a result on the {@link CompletableFuture} after the user
+     * has logged on. Velocity's own built-in handling will be used to provide errors to the client.
+     * @return a {@link CompletableFuture} representing the status of this connection
+     */
+    CompletableFuture<Boolean> connectWithIndication();
+
     /**
      * Initiates the connection to the remote server without waiting for a result. Velocity will use generic error
      * handling code to notify the user.