class_docstr: Class for forecasting time series with mean 
code: def __init__(self, params: OperationParameters):
      super().__init__(params)
  
imports: from copy import copy
  import numpy
  from fedot.core.data.data import InputData, OutputData
  from fedot.core.operations.evaluation.operation_implementations.data_operations.ts_transformations import ts_to_table, transform_features_and_target_into_lagged
  from fedot.core.operations.evaluation.operation_implementations.implementation_interfaces import ModelImplementation
  from fedot.core.operations.operation_parameters import OperationParameters
  from fedot.core.repository.dataset_types import DataTypesEnum
label_desc: Use image node_id 1 to create a new NaiveAverageForecastImplementation object from inherited base classes: ModelImplementation with example: obj = NaiveAverageForecastImplementation(params)