input: Write a python function to add student details and print them in a tabular form using the StudentDetails class.
  assert student_details.add_student("John", 20, 101) == None
  assert student_details.add_student("Alice", 22, 102) == None
  assert student_details.print_table() == None
output: class StudentDetails:
      def __init__(self):
          self.students = []
  
      def add_student(self, name, age, student_id):
          self.students.append({"name": name, "age": age, "student_id": student_id})
  
      def print_table(self):
          print(f"{'Name':<10}{'Age':<5}{'Student ID':<10}")
          print("-" * 25)
          for student in self.students:
              print(f"{student['name']:<10}{student['age']:<5}{student['student_id']:<10}")
  
  student_details = StudentDetails()