Update Pokédex and formats with 3 new Pokémon

Update the Pokédex and formats data to add information about
the three unreleased Pokémon that finish the sixth
 generation Pokédex.
The information added has been gotten from several screenshoots
and different sources.
The base stats are not realiable and have been merely calculated
from the screenshoots just to have them filled for now
until further information is revealed.