add missing listener files

modules/.gitignore

@@ -1,6 +1,5 @@
 # Ignore everything so if we update via git, nothing is overwritten
-*
 
 # But keep the sample and this file around
 !.gitignore
-!Sample/*
+!/Sample/

modules/Sample/Listeners/TestEventListener.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Modules\Sample\Listeners;
+
+use App\Events\TestEvent;
+use Log;
+
+class TestEventListener
+{
+    /**
+     * Handle the event.
+     */
+    public function handle(TestEvent $event) {
+        Log::info('Received event', [$event]);
+    }
+}

modules/Sample/Providers/EventServiceProvider.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Modules\Sample\Providers;
+
+use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
+
+class EventServiceProvider extends ServiceProvider
+{
+    /**
+     * The event listener mappings for the application.
+     */
+    protected $listen = [
+        'App\Events\TestEvent' => [
+            'Modules\Sample\Listeners\TestEventListener',
+        ],
+    ];
+
+    /**
+     * Register any events for your application.
+     */
+    public function boot()
+    {
+        parent::boot();
+    }
+}