Create a function that returns the number of hashes and pluses in a string.
hashPlusCount("###+") ➞ [3, 1]
hashPlusCount("##+++#") ➞ [3, 3]
hashPlusCount("#+++#+#++#") ➞ [4, 6]
hashPlusCount("") ➞ [0, 0]
[0, 0] for an empty string.[hashes, pluses].