Add configurable option for controlling default "delete_on_deplete" behaviour (#4106)

(cherry picked from commit aa7fa89b0c)

InvenTree/stock/migrations/0091_alter_stockitem_delete_on_deplete.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.16 on 2022-12-24 12:29
+
+from django.db import migrations, models
+import stock.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stock', '0090_stocklocation_structural'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='stockitem',
+            name='delete_on_deplete',
+            field=models.BooleanField(default=stock.models.default_delete_on_deplete, help_text='Delete this Stock Item when stock is depleted', verbose_name='Delete on deplete'),
+        ),
+    ]