Add virtual scrolling card component

Add OpenAPI client(s)

src/app/openapi/api/api.ts

@@ -0,0 +1,5 @@
+export * from './card.service';
+import { CardService } from './card.service';
+export * from './deck-controller.service';
+import { DeckControllerService } from './deck-controller.service';
+export const APIS = [CardService, DeckControllerService];