Support multiple image sets

src/model.ts

@@ -1,11 +1,18 @@
 export const SIZES = [1600, 1200, 800, 600, 400, 200];
 export const URL = "img/data.json";
 
-export interface Images {
-    [name: string]: Image
+export interface Data {
+    sets: ImageSet[]
+}
+
+export interface ImageSet {
+    location: string;
+    description: string;
+    images: Image[]
 }
 
 export interface Image {
+    src: string;
     height: number;
     width: number;
 }