[Gen 7] Add PokePelago info

[RichardPaulAstley]

Pretty much this.
On SM / USUM the Island of Poke Pelago can have Pokémon there. They can be RNG'd, and some are exclusive to that place.
Would be cool if CitraRNG could display just the stat of them.

PCalc has the data for the Slot 1 and 2. However, slot 3 is missing.

Thanks <3