feat(services): add duration convertor

app/Services/Utils/DurationConvertorResult.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Services\Utils;
+
+use Brick\DateTime\Duration;
+
+/**
+ * Results of DurationConvertor::convertIntoWorkDuration
+ */
+final readonly class DurationConvertorResult
+{
+    public function __construct(
+        public bool $overlaps,
+        public Duration $duration,
+    ) {
+    }
+}