Add possibility to add time frames to energy tariffs

Within the energy dashboard there is the possibility to add the current tariffs for energy (electricity and gas).
But as soon as the tariff changes and you adjust the tariff values, it is fixed and also applied to past usage (or production).
It would be good to be able to set a start (and end) date from which date the tariff is valid, so you’ll get a more realistic overview of the costs.
Similar like you can do in the SolarEdge dashboard

F.e. Jan 01 2022 the tariff for Peak is €0.24 and Off Peak is €0.22, but from June 1 2022 it is €0.39 for Peak and €0.31 for Off Peak and from Jan 1 2022 Peak is €0.75 and Off Peak is €0.57