A slug generator generator that will generate slugs forever. Each slug is suffixed with its iteration number.
After iteration through all possible unique combinations the suffix number is incremented and the generator starts
from the beginning. Use cases are for when a smaller slug is required but uniqueness needs to be guaranteed over a longer
period of time.
If the length of the slug is not important then a 4 or 5 word slug generator should be more than satisfactory from a uniqueness
perspective given they could be trillions of unique combinations.