add: add cash transaction fodler model and crud for this model

core/apps/finance/migrations/0003_cashtransactionfolder_cashtransaction_folder.py

@@ -0,0 +1,33 @@
+# Generated by Django 5.2.4 on 2025-09-05 17:11
+
+import django.db.models.deletion
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('finance', '0002_paymenttype_cashtransaction_employees_and_more'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='CashTransactionFolder',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False, unique=True)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('name', models.CharField(max_length=200)),
+            ],
+            options={
+                'verbose_name': 'Kassa papkasi',
+                'verbose_name_plural': 'Kassa papkalari',
+            },
+        ),
+        migrations.AddField(
+            model_name='cashtransaction',
+            name='folder',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='cash_transactions', to='finance.cashtransactionfolder'),
+        ),
+    ]