[8.x] Allow adding more jobs to a pending batch (#37151)

* allow adding more jobs to a pending batch

* Update PendingBatch.php

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/Illuminate/Bus/PendingBatch.php

@@ -54,6 +54,19 @@ public function __construct(Container $container, Collection $jobs)
         $this->jobs = $jobs;
     }
 
+    /**
+     * Add jobs to the batch.
+     *
+     * @param  array  $jobs
+     * @return $this
+     */
+    public function add($jobs)
+    {
+        $this->jobs->push($jobs);
+
+        return $this;
+    }
+
     /**
      * Add a callback to be executed after all jobs in the batch have executed successfully.
      *