[FR] SMT intergration: show pack voltage in charging curves

[Adminius]

add battery pack voltage to can-table show battery pack voltage in Grafana charging curves

[Adminius]

SELECT $__time(datum), val * -1 as ‚Battery charge Power [kW]‘ FROM can WHERE $__timeFilter(datum) and CarID = $Car and id = 43 and val between -300 and 0 ORDER BY datum

SELECT $__time(datum), val as ‚Battery Voltage [V]‘ FROM can WHERE $__timeFilter(datum) and CarID = $Car and id = 30 and val between 250 and 450 ORDER BY datum ASC",

SELECT $__time(datum), val * -1 as ‚Battery charge current [A]‘ FROM can WHERE $__timeFilter(datum) and CarID = $Car and id = 44 ORDER BY datum ASC",