Show BomItem reference field in BOM table

InvenTree/part/forms.py

@@ -136,6 +136,7 @@ class EditBomItemForm(HelperForm):
             'part',
             'sub_part',
             'quantity',
+            'reference',
             'overage',
             'note'
         ]

InvenTree/part/serializers.py

@@ -166,6 +166,7 @@ class BomItemSerializer(InvenTreeModelSerializer):
             'sub_part',
             'sub_part_detail',
             'quantity',
+            'reference',
             'price_range',
             'overage',
             'note',