Added global setting to enable manufacturer parts

Created SourceItem model
Updated templates

InvenTree/company/migrations/0033_auto_20210329_1700.py

@@ -0,0 +1,33 @@
+# Generated by Django 3.0.7 on 2021-03-29 17:00
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('company', '0032_manufacturerpart'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SourceItem',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('part_id', models.PositiveIntegerField()),
+                ('part_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='manufacturerpart',
+            name='source_item',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='manufacturer_parts', to='company.SourceItem', verbose_name='Sourcing Item'),
+        ),
+        migrations.AddField(
+            model_name='supplierpart',
+            name='source_item',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='supplier_parts', to='company.SourceItem', verbose_name='Sourcing Item'),
+        ),
+    ]