Fix Parental Bond

[scheibo]

Parental Bond should run two independent strikes to calculate damage, not do a trivial damage = damage * modifier. Parental Bond causes the move to run an entirely new damage calculation and applies the baby hit modifier in between the spread move modifier and the weather modifier. As a result, there should be two independent sets of damage rolls displayed, as well as percent to KO being based on 256 combinations of damage rolls, not 16. Displaying it as a combination would require displaying potentially 256 damage rolls, so most damage calculators that implement Parental Bond accurately do something like this:

Originally posted by @DaWoblefet on Smogon

This will likely require making calc.calculate return a Result[] instead of Result, or something to that effect. The VGC calc handles this already, might be worth looking to see what they're doing.

[scheibo]

This is somewhat obnoxious with our existing multi hit support. Also, TT just returns parentDamage and childDamage instead damage (but one description). Not sure if we want that or Result, will need to think about it.

[scheibo]

Relevant: https://github.com/jake-white/VGC-Damage-Calculator/blob/gh-pages/script_res/damage.js#L644