feat(ticket): implement refund functionality and expose allow_refund flag

app/Domains/Ticket/Requests/AdminAppTicketRefundRequest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Domains\Ticket\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class AdminAppTicketRefundRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /** @return array<string, list<string|object>> */
+    public function rules(): array
+    {
+        return [
+            'refund_type' => ['required', 'string', Rule::in(['partial', 'total'])],
+        ];
+    }
+}