Sort students

Create and export a sortStudents function that takes 3 parameters and return a new array with students sorted according to the given params. Original array should not be changed.

The parameters are:

an initial array of students
a string representing a type of sort
a sort order that can be asc or desc

You also need to add correct types:

Create Student interface matching the next data:

{
  name: 'Jessica',
  surname: 'Buxton',
  age: 26,
  married: true,
  grades: [5, 5, 4, 5, 4, 4, 4, 4, 5, 4, 5, 4],
}

Create and export a SortType enum, having the next values:
```
Name
Surname
Age
Married
AverageGrade
```
Hint: AverageGrade is sorting by an average value in grades array.
Create SortOrder type with only 2 values 'asc' and 'desc' Hint: If values are the same the students should go in the original order (no matter we use asc or desc order)

SashaRudenko/ts_sort_students

Sort students