Add QPowerPoint slide size support

src/types.ts

@@ -97,11 +97,14 @@ export interface SheetChart {
   valueRange: string;
 }
 
+export type SlideSizeId = "wide" | "standard";
+
 export interface SlideDeck {
   id: string;
   title: string;
   updatedAt: string;
   activeSlideId: string;
+  slideSize?: SlideSizeId;
   slides: Slide[];
 }