feat(hero-banner): update image handling to support responsive images and refactor template

feat(cart): enhance editing logic and add tests for editable state
feat(tenant): modify HeroConfig to include responsive image type

src/app/core/services/tenant.interface.ts

@@ -20,13 +20,18 @@ export interface WebsiteType {
 }
 
 export interface HeroConfig {
-  background_image_id?: string | null;
+  background_image_id?: string | ResponsiveImage | null;
   title_html?: string | null;
   description_html?: string | null;
   button_text?: string | null;
   button_href?: string | null;
 }
 
+export interface ResponsiveImage {
+  desktop: string;
+  mobile: string;
+}
+
 export interface AdditionalInfoConfig {
   description?: string | null;
 }