feat(SW-439): add support for one column grid

types/components/blocks/cardsGrid.ts

@@ -3,3 +3,5 @@ import { CardsGrid } from "@/types/trpc/routers/contentstack/blocks"
 export interface CardsGridProps extends Pick<CardsGrid, "cards_grid"> {
   firstItem?: boolean
 }
+
+export type Columns = 1 | 2 | 3

types/enums/cardsGrid.ts

@@ -7,6 +7,7 @@ export namespace CardsGridEnum {
 }
 
 export enum CardsGridLayoutEnum {
+  ONE_COLUMN = "oneColumnGrid",
   TWO_COLUMNS = "twoColumnGrid",
   THREE_COLUMNS = "threeColumnGrid",
   TWO_PLUS_ONE = "twoPlusOne", // Not sure if this is used?