Forecasting Pylint Pre-Commit Error Fixes

[simmonsj330]

Description

When using pre-commit hooks, pylint was snagged by the following errors:

************* Module openbb_terminal.forecast.mstl_model
openbb_terminal/forecast/mstl_model.py 114: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/mstl_model.py 123: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)
************* Module openbb_terminal.forecast.autoarima_model
openbb_terminal/forecast/autoarima_model.py 101: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/autoarima_model.py 110: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)
************* Module openbb_terminal.forecast.autoselect_model
openbb_terminal/forecast/autoselect_model.py 147: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/autoselect_model.py 161: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)
************* Module openbb_terminal.forecast.seasonalnaive_model
openbb_terminal/forecast/seasonalnaive_model.py 104: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/seasonalnaive_model.py 113: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)
************* Module openbb_terminal.forecast.autoces_model
openbb_terminal/forecast/autoces_model.py 104: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/autoces_model.py 113: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)
************* Module openbb_terminal.forecast.autoets_model
openbb_terminal/forecast/autoets_model.py 105: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/autoets_model.py 114: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)
************* Module openbb_terminal.forecast.rwd_model
openbb_terminal/forecast/rwd_model.py 93: E1101 Instance of 'StatsForecast' has no 'cross_validation' member (no-member)
openbb_terminal/forecast/rwd_model.py 102: E1101 Instance of 'StatsForecast' has no 'forecast' member (no-member)

Per @martinb-bb, this is a false, positive. As such, E1101 was added to the pylint ignore line in each file.

Others

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.