Major refactor of the component
- Objective: Update the component to the "HA way" using devices and entities
- Zaptec devices (installation, circuit and charger) use name set in Zaptec portal
- Added entities for each device. No need for using attrs and templates.
- Added support for selecting which chargers to add to zaptec
- Added support for adding an optional prefix to the device names
- Fixed adjustable charging currents, all or individual three phase.
- Added support for authorization and deauthorization of charging using the Zaptec internal native authentication
- Zaptec produces energy sensors that can be used with HA energy dashboard
- Refactor services in order to make them easier to use with the service call UIs
- Hardnened the cloud connection robustness (better timeout, better data and error handling)
- Use data update coordinator for polling entities
- Added "Download diagnostics"
- Bugfixes and documentation update