Add target components logic into HierarchicalPipeline

[alex-hse-repository]

🚀 Feature Request

Add target components logic into HierarchicalPipeline

Proposal

In HierarchicalPipeline

• Create methods predict and raw_predict, implement them the same way as forecast, raw_forecast but calling the predict
• In methods forecast, predict pass return_components flag to raw_forecast,raw_predict
• In methods raw_forecast,raw_predict
  • Pass return_components flag to to the methods forecast, predict of the super class
  • Add target components into resulting dataset in the end of the methods using add_target_components

Test cases

• Create tests for predict, raw_predict similar to forecast, raw_forecast
• Check that when return_components=True dataset contains target components(ts.target_components is not None) for methods forecast, predict

Additional context

Is blocked by #1167, #1169