Tambah model PersetujuanPenawaran

Menambahkan file model baru PersetujuanPenawaran.php dalam module LPJ. Model ini mencakup relasi dengan tabel PenawaranTender, Region, dan User, serta mendefinisikan properti yang dapat diisi dan tipe data yang sesuai dalam tabel 'persetujuan_penawaran'.

app/Models/PersetujuanPenawaran.php

@@ -0,0 +1,56 @@
+<?php
+
+    namespace Modules\Lpj\Models;
+
+    use Modules\Lpj\Models\Base;
+    use Modules\Lpj\Models\PenawaranTender;
+    use Modules\Lpj\Models\Region;
+    use Modules\Usermanagemenet\Models\User;
+
+    class PersetujuanPenawaran extends Base
+    {
+
+        protected $table = 'persetujuan_penawaran';
+
+        protected $fillable = [
+            'penawaran_id',
+            'nomor_proposal_penawaran',
+            'tanggal_proposal_penawaran',
+            'biaya_final',
+            'sla_resume',
+            'sla_final',
+            'catatan',
+            'attachment',
+            'region_id',
+            'status',
+            'authorized_status',
+            'authorized_at',
+            'authorized_by',
+        ];
+
+        protected $casts = [
+            'tanggal_proposal_penawaran' => 'date',
+            'sla_resume'                 => 'datetime',
+            'sla_final'                  => 'datetime',
+            'status'                     => 'boolean',
+            'authorized_at'              => 'datetime',
+        ];
+
+        // Relationship with Penawaran
+        public function penawaran()
+        {
+            return $this->belongsTo(PenawaranTender::class, 'penawaran_id');
+        }
+
+        // Relationship with Region
+        public function region()
+        {
+            return $this->belongsTo(Region::class);
+        }
+
+        // Relationship with User (for authorized_by)
+        public function authorizedBy()
+        {
+            return $this->belongsTo(User::class, 'authorized_by');
+        }
+    }