input: Write a python function to fetch and return a list of employees from a database.
  assert get_employees() == {'employees': [{'id': 1, 'name': 'John Doe', 'age': 30}, {'id': 2, 'name': 'Jane Smith', 'age': 25}]}
  assert get_employees() == {'employees': [{'id': 3, 'name': 'Alice Brown', 'age': 28}, {'id': 4, 'name': 'Bob Johnson', 'age': 22}]}
  assert get_employees() == {'employees': []}
output: def get_employees():
      import sqlite3
  
      # Connect to the database
      conn = sqlite3.connect('employee.db')
      cursor = conn.cursor()
  
      # Fetch employees from the database
      cursor.execute("SELECT id, name, age FROM employees")
      rows = cursor.fetchall()
  
      # Close the connection
      conn.close()
  
      # Format the result
      employees = [{'id': row[0], 'name': row[1], 'age': row[2]} for row in rows]
      return {'employees': employees}