feat(ticket): add refund calculation functionality and corresponding tests

app/Domains/Ticket/Resources/AdminApp/AdminAppTicketRefundCalculationResource.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Domains\Ticket\Resources\AdminApp;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @property-read array{
+ *     total: string|null,
+ *     partial: string|null,
+ * } $resource
+ */
+class AdminAppTicketRefundCalculationResource extends JsonResource
+{
+    /**
+     * @return array{total: string|null, partial: string|null}
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'total' => $this->resource['total'],
+            'partial' => $this->resource['partial'],
+        ];
+    }
+}