Updated LocateShortUrlVisit so that it dispatches a VisitLocated event

module/Core/src/EventDispatcher/VisitLocated.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\EventDispatcher;
+
+use JsonSerializable;
+
+final class VisitLocated implements JsonSerializable
+{
+    /** @var string */
+    private $visitId;
+
+    public function __construct(string $visitId)
+    {
+        $this->visitId = $visitId;
+    }
+
+    public function visitId(): string
+    {
+        return $this->visitId;
+    }
+
+    public function jsonSerialize(): array
+    {
+        return ['visitId' => $this->visitId];
+    }
+}