Feat: Add ability to ban cards and display it

backend/types.go

@@ -38,6 +38,7 @@ type Carte struct {
 	Price 					string  	`db:"price" json:"price"`
 	CardmarketUri 	string 		`db:"cardmarket_url" json:"cardmarket_url"`
 	CanBeCommander 	bool 			`db:"can_be_commander" json:"can_be_commander"`
+	Banned 					bool 			`db:"banned" json:"banned"`
 }
 
 type DeckCard struct {