Annual electricity cost prediction tool

What's Changed

PredBat can now run annual simulations for different solar array's, batteries and tariff's to predict system performance and payback periods.

• Annual electricity cost prediction tool (engine, CLI and web UI) by @springfall2008 in #4315
• Add forecast_solar_open_meteo_first to use Open-Meteo as the primary solar source by @springfall2008 in #4387

Full Changelog: v8.36.11...v8.47.0