write a simple SWIFT program that does the following:

(1) create a course struct that has course name, semester (for example Spring

2020), and grade.

(2) create a student class that has student id, student name, list of courses (list

of the struct course), and level.

(3) Level is an enum that can be Undergrad, Grad, and Audit.

(4) The student class must have an initializer with student, student name, and level

The student class will have 2 function:

(5) addCourse

(6) listCourses (function will loop through the list of courses and display course name,

semester, and Grade)

(7) Create a static function that add instances of student class to a list of students.

(8) Create a static function that loops through the list of students and lists the students by

their level that is, you will produce 3 lists: Undergrad list, Grad list, and Audit List