Add non weighted moving average model

[tackes]

Description

It doesn't appear to be a current functionality to add a simple moving average. HOLT is weighted, a simple MA model with a moving window size parameter
This would be another nice model to use for baselining and smoothing.

Use case

A smooth model which had use cases is baselining

[GGA-PERSO]

@tackes
You are probably looking for these models ?
https://nixtlaverse.nixtla.io/statsforecast/src/core/models.html#windowaverage
https://nixtlaverse.nixtla.io/statsforecast/src/core/models.html#seasonalwindowaverage

[tackes]

@GGA-PERSO no unfortunately those are not moving average models.
Those are static window averages.

A moving average model recursively predicts 1 step using a average then repeats.
These window functions do not do that