Add funds page to auto calculate new TP price

There are times when a bot gets stuck out at max_safety_order, or just went we want to add funds for whatever reason.
It will be extremely helpful if the add funds page can automatically show us what is the new TP price based on the amount of funds we add. So I can adjust as needed until I get to a TP price.
Alternatively, it can go the other way, but specifying our desired new TP price, the calculation can show how much funds we need to add.