Add holiday

Please incorporate a feature that allows users to indicate when they have the opportunity to train extra much. For example, a week-long cycling vacation in Spain, a week in the French Alps, moments when you have more time to cycle on average than other standard weeks.

Please incorporate a feature that allows users to indicate when they have the opportunity for extra training. For example, during a week-long cycling vacation in Spain, a week in the French Alps, or other periods when they generally have more time for cycling than in standard weeks.