This merge request is to develop the saving part of !104.
When in the recipe the Output format is set to 'Scorecards' the skill metrics are saved with the function save_metrics_scorecard. This new function allows to save metrics with different dimensions: the can have 'syear' dimension or not.
This new function is taking advantage of SaveExp from CSTools package. However, there was the need to develop this function in order that it can save the 'time' dimension correctly without having 'syear'. Currently, SaveExp obligates Dates to have sdate_dim and ftime_dim. The development has been done in this branch. It also has been added in SUNSET here.