Add 'user' field to attachment

InvenTree/part/migrations/0036_partattachment_user.py

@@ -0,0 +1,21 @@
+# Generated by Django 3.0.5 on 2020-05-12 10:33
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('part', '0035_auto_20200406_0045'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='partattachment',
+            name='user',
+            field=models.ForeignKey(blank=True, help_text='User', null=True, on_delete=django.db.models.deletion.SET_NULL, to=settings.AUTH_USER_MODEL),
+        ),
+    ]