Introduced PartRelated model to store part relationships

InvenTree/part/migrations/0052_partrelated.py

@@ -0,0 +1,22 @@
+# Generated by Django 3.0.7 on 2020-10-15 18:51
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0051_bomitem_optional'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='PartRelated',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('part_1', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='related_parts_1', to='part.Part')),
+                ('part_2', models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='related_parts_2', to='part.Part')),
+            ],
+        ),
+    ]