Create a function that sorts words by a given string.
sort_by_string(["poof", "floof", "loop"], "flatp")
➞ ["floof", "loop", "poof"]
sort_by_string(["small", "big", "medium"], "sazymtb")
➞ ["small", "medium", "big"]
sort_by_string(["apple", "banana", "cherry", "date"], "dbca")
➞ ["date", "banana", "cherry", "apple"]