Send notifcation when plan can no longer reached

[StefanSchoof]

Is your feature request related to a problem? Please describe. If a plan fails the goal to have certain SoC at a certain, then the car has not the extended range and this can have serious consequences. There a many reason why this can happen (cold day with slower charging, Communication error to the wallbox, car does not wake up and may more). If the user finds his car with a insufficient range when he want to drive it is often to late.

Describe the solution you'd like Send a notification to the user, when to goal (minus some tolerance) will not be met. So the user has the chance for mitigation (wake the car by hand, do a manual phase switch, start early and use a fast charger, postpone a meeting, ...)

Describe alternatives you've considered I have no good idea.

Additional context

[andig]

The tricky part here is to do this only once. PR welcome.