Create a function that accepts a string and returns true if it's in the format of a proper phone number and false if it's not. Assume any number between 0-9 (in the appropriate spots) will produce a valid phone number.
This is what a valid phone number looks like:
(123) 456-7890
isValidPhoneNumber("(123) 456-7890") ➞ true
isValidPhoneNumber("1111)555 2345") ➞ false
isValidPhoneNumber("098) 123 4567") ➞ false
Don't forget the space after the closing parentheses.