- Add API endpoint to create a new brand
- Add API endpoint to create a new item
- Add API endpoint to create a new location
- Add API endpoint to increment the amount of one item
- Add get_locations()
- Add init_location() to create a new blank location
- Add increment_amount() to increment the amount of one item
- Remove set_brand_key() since it will be replaced by separate functions
for each property you can set