add ev, update to sp.att,sp.def, update URL to Pokemon Scarlet and Violet'

[pnkoundinya]

add Effort Values to the returned metadata
Update special trait to Special attack and special defense

[pnkoundinya]

@shadforth can you review this, I like what you had here but it did not have Effort values ( which I wanted to use for EV training) and I updated the URL to be Scarlet-vilolet, Plus I split Special into sp.attack and sp.defense