Bracket Validator Challenge

Your task is to create a function called bracket_validator that checks whether a string contains valid and correctly paired brackets.

📌 Examples

Input	Output	Reason
( )	true	Properly matched
(()	false	One bracket is not closed
( 2+2 (-3*6)*7))	false	Extra closing bracket with no opening match

🎯 Goal

Implement bracket_validator(input_string) so that it accurately identifies whether the bracket structure in the given string is valid.

Good luck! 💪