Add ability to 'copy' a part
Add ability to 'copy' a part

- Launch a PartCreate form
- initialize form data with the existing part (if it exists!)
- use model_to_dict to pass data around

inventree/InvenTree,inventree/InvenTree,SchrodingersGat/InvenTree,SchrodingersGat/InvenTree,SchrodingersGat/InvenTree,inventree/InvenTree,inventree/InvenTree,SchrodingersGat/InvenTree