If today was Monday, in two days, it would be Wednesday.
Create a function that takes in a list of days as input and the number of days to increment by. Return a list of days after n number of days has passed.
after_n_days(["Thursday", "Monday"], 4) ➞ ["Monday", "Friday"]
after_n_days(["Sunday", "Sunday", "Sunday"], 1) ➞ ["Monday", "Monday", "Monday"]
after_n_days(["Monday", "Tuesday", "Friday"], 1) ➞ ["Tuesday", "Wednesday", "Saturday"]
n number of days may be greater than 7.