You have a list of item codes with the following format: "[letters][digits]"
Create a function that splits these strings into their alphabetic and numeric parts.
split_code("TEWA8392") ➞ ["TEWA", 8392]
split_code("MMU778") ➞ ["MMU", 778]
split_code("SRPE5532") ➞ ["SRPE", 5532]
N/A