feat: implement cases function to convert string to UPPER_SNAKE_CASE

Author: chefmatthaus-hub

Sprint-3/3-mandatory-implement/2-cases.js

@@ -14,3 +14,11 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+
+const string = "hello there"
+
+function cases(inputStr) {
+  return inputStr.toUpperCase().replace(/ /g, "_");
+}
+
+console.log(cases(string));