/api/series/auto-arima-find: find parameters of SARIMA model automatically
/api/series/manual-forecast: use determined model with parameters to forecast next values
/api/series/identify-correlations: Calculate ACF and PACF for a time series
/api/series/decompose-stl: Applies Seasonal-Trend-Loess (STL) decomposition to separate the series into trend, seasonal, and residual components.
