feat(models): add TempBillDetail model

- Menambahkan model TempBillDetail untuk tabel temp_bill_details.
- Menggunakan trait HasFactory untuk dukungan factory.
- Menentukan atribut yang dapat diisi secara massal.

app/Models/TempBillDetail.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Modules\Webstatement\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+// use Modules\Webstatement\Database\Factories\TempBillDetailFactory;
+
+class TempBillDetail extends Model
+{
+    use HasFactory;
+
+    protected $table = 'temp_bill_details';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        '_id',
+        'repay_ref',
+        'repay_amount',
+        'writeoff_ref',
+        'or_prop_amount',
+        'property',
+        'bill_type',
+        'payment_date',
+        'writeoff_amt',
+        'os_prop_amount',
+        'actual_pay_date',
+        'bill_status',
+        'payment_type',
+        'payment_method',
+        'os_total_amount',
+        'bill_date',
+        'arrangement_id'
+    ];
+}