feat(cards): Implement endpoint for card generation

models/card.go

@@ -12,7 +12,7 @@ type Card struct {
 	Code    string `json:"code"`
 }
 
-type ContractTemplateOptions struct {
+type CardTemplateOptions struct {
 	Cards         []Card `json:"cards"`
 	EventName     string `json:"event_name"`
 	CardSubtitle  string `json:"card_subtitle"`