UI: Make loadpoints configurable

[andig]

Loadpoints are still setup in yaml in first step, but become partly configurable in config ui:

• basic lp settings move to config ui
• main ui still contains 1p3p (for supporting chargers) + smartcost (depending on tariff)
• all properties are modeled as settings, not device

basic settings are:

Title_            string `mapstructure:"title"`
ConfiguredPhases_ int           `mapstructure:"phases"`
MinCurrent_       float64       `mapstructure:"minCurrent"`
MaxCurrent_       float64       `mapstructure:"maxCurrent"`

step 2:

Priority_       int    `mapstructure:"priority"`
Soc             SocConfig
Enable, Disable ThresholdConfig

[Matthias3678]

How can I undo settings that I have made via the UI?

My car can only charge on 2-phase. I have an Elli without a measuring device. Now it counts incorrectly and charging only starts late.

[naltatis]

This is off-topic here. But the solution is to specify the phases at your vehicle: https://docs.evcc.io/docs/reference/configuration/vehicles/#phases