You need to write a function that takes the speed of a car as input and calculates the number of points based on the following rules:
- The speed limit is 70.
- For every 5 km/h over the speed limit, 1 point is added.
- If the driver accumulates 12 points, their license is suspended.
Example usage:
console.log(checkSpeed(60)); // Output: Ok
console.log(checkSpeed(75)); // Output: Points: 1
console.log(checkSpeed(85)); // Output: Points: 3
console.log(checkSpeed(135)); // Output: License suspended