Add the seq feature for better testing and uniqueness

[huogerac]

The model bakery has interesting features that we should use here too:
Does make sense add this in this library?

customers = baker.make('Customer', name=baker.seq('Test'), _quantity=3)
for customer in customers:
     print(customer.name)
#  'Test1'
#  'Test2'
#  'Test3'

Also this can be used for dates:

start_date = datetime(2025, 3, 13, 9, 0, 0)

# Create 3 customers with created_at increasing by 1 day
customers = baker.make(
    'Customer',
    name=baker.seq('Chad'),
    created_at=baker.seq(start_date, timedelta(days=1)),
    _quantity=3
)

for customer in customers:
    print(customer.name, customer.created_at)

Chad1 2025-03-13 09:00:00
Chad2 2025-03-14 09:00:00
Chad3 2025-03-15 09:00:00

Others options:

base_datetime = datetime(2024, 3, 13, 9, 0, 0)  # Start at 9:00 AM

messages = baker.make(
    "app.Message",
    created_at=baker.seq(base_datetime, timedelta(minutes=5)),  # Increments by 5 minutes
    _quantity=100
)


# Other model bakery feature is using a list, for example, to have many messages aleatory in the same day:
import random

messages = baker.make(
    "app.Message",
    created_at=[base_datetime + timedelta(minutes=random.randint(0, 1440)) for _ in range(100)],
    _quantity=100
)


baker.make(
    'Customer',
    age=seq(15, increment_by=3)
    height_ft=seq(5.5, increment_by=.25)
    appointment=seq(date(2014, 7, 21), timedelta(days=1)),
    name=seq('Custom num: ', increment_by=2, start=5),
)

# output
customer.age    # 18
customer.height_ft    # 5.75
customer.appointment    # datetime.date(2014, 7, 22)
customer.name    # 'Custom num: 5'

new_customer.age    # 21
new_customer.height_ft    # 6.0
new_customer.appointment    # datetime.date(2014, 7, 23)
customer.name    # 'Custom num: 7'