update api and add more features

app/Http/Requests/Finance/ApplyExtraChargeRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Requests\Finance;
+
+use App\Http\Requests\ApiFormRequest;
+
+class ApplyExtraChargeRequest extends ApiFormRequest
+{
+    public function authorize(): bool
+    {
+        return $this->user() !== null;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'invoice_id' => ['required', 'integer', 'min:1'],
+        ];
+    }
+}