56.findFreeCalendarSpots

Write a function named findFreeCalendarSpots that receives 1 parameter:

• an Array of Objects representing meetings for today. Each one has the following properties:
  • name - a string
  • startTime - an Object with hours and minutes, both numbers
  • duration - a number representing minutes

The function should return a list of all the intervals during working hours (9:00 - 17:00) in which we have no meetings.

Those should be sorted ascending by start time, and have the same structure as meeting except the name property.