make_future converts the forecasts from a fable
to a future_frame. A future_frame is a tibble with a
standardized format and contains the columns:
index_id: Date-time index as specified in context.
series_id: Unique identifier for the time series as specified in context.
model: Character value. The forecasting model.
split: Integer value. The number of the train data split.
horizon: The forecast horizon as integer.
point: The point forecast as numeric value.
make_future(fable, context)A fable created via fabletools::forecast().
A named list with the identifiers for seried_id, value_id and index_id.
future_frame is a tibble with the forecasts.