Refactor operational statuses and add power statuses

[klejejs]

Breaking changes:

• The operational status code is refactored to show all available operational statuses instead of predefined ones; thus, the existing operational status entity names and IDs will change. This can impact any scripts or automations that include operational statuses or Lovelace dashboards that display them. This change will also make some existing entities unavailable, as they are replaced, those unavailable entities can safely be deleted.
• Incorrect Auxiliary heater sensors have been removed in favor of new "Power Status" entities that will display whether any of the auxiliary heaters are running.