feat: Add missing German sets (#450)

data/Platinum/Arceus/90.ts

@@ -4,6 +4,7 @@ import Set from '../Arceus'
 const card: Card = {
 	name: {
 		en: "Professor Oak's Visit",
+		de: "Professor Eichs Besuch"
 	},
 	illustrator: "Ken Sugimori",
 	rarity: "Uncommon",
@@ -23,6 +24,7 @@ const card: Card = {
 
 	effect: {
 		en: "You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card.",
+		de: "Ziehe 3 Karten. Danach wähle 1 Karte von deiner Hand und lege sie unter dein Deck."
 	},
 	trainerType: "Supporter",