Re-work solcast cloud, move settings dir

What's Changed

Solcast cloud integration

The Solcast cloud integration now caches the predictions for the current day rather than using the estimated actuals which resulted in an extra API access per site. You may lose today's history of predictions when updating but it should continue correctly into the future.

• Solcast cloud to use cached predictions (avoid 2nd api use), add multiple days ahead by @springfall2008 in #1169
• Update install.md by @springfall2008 in #1168

Solcast data

Created _d2/_d3/_d4/_d5/_d6 sensors to have the predictions for the week

Minor breaking change

The directory used to save/restore settings has been moved to the addon_config directory of Predbat/AppDaemon-Predbat and is no longer in /homeassistant/config. This means if you want to keep some of your old sets of settings you need to copy the YAML files across to the new directory.

• Moved settings save/restore directory to config by @springfall2008 in #1170

Full Changelog: v7.21.5...v7.22.0