Grade Report Generator

Turn a numeric score into a grade report. The report should include the letter grade, whether the student passed, and a short feedback message.

1. `getLetterGrade(score)` should return `"A"`, `"B"`, `"C"`, `"D"`, or `"F"` based on the score.
2. `hasPassed(score)` should return `true` when the score is `60` or higher.
3. `getFeedback(grade)` should return a short message for the grade.
4. `createGradeReport(name, score)` should return one object with `name`, `score`, `grade`, `passed`, and `feedback`.