Save/Restore settings selector function

What's Changed

• Save/Restore settings selector function by @springfall2008 in #616

New drop-down menu select.predbat_saverestore can be used to save your current HA settings for Predbat and restore from saved settings. You can rename the settings from the default by renaming the YAML files generated in /homeassistant/predbat_save directory.

• Update dynamic-entities-card.yaml by @springfall2008 in #618

Full Changelog: v7.14.41...v7.14.42