More details on energy usage when designing a ship

[noncom]

When designing a ship there is currently no way to predict its energy requirements during boost. Sometimes you need to have much more precise info than a guess because the design depends on it.

Please add more detailed stats regarding planned energy usage of the ship, for example the following readouts:

• boosting time until the ship starts using battery -- so we could pland and balance the energy use and engines amount/power
• free energy left after the first second of boosting -- so we could understand how much headroom for other systems is left in our design