feat: Bulk HTML export for collection

app/models/Collection.ts

@@ -1,6 +1,6 @@
 import { trim } from "lodash";
 import { action, computed, observable } from "mobx";
-import { CollectionPermission } from "@shared/types";
+import { CollectionPermission, FileOperationFormat } from "@shared/types";
 import { sortNavigationNodes } from "@shared/utils/collections";
 import CollectionsStore from "~/stores/CollectionsStore";
 import Document from "~/models/Document";
@@ -215,9 +215,10 @@ export default class Collection extends ParanoidModel {
     return this.store.unstar(this);
   };
 
-  export = () => {
+  export = (format: FileOperationFormat) => {
     return client.post("/collections.export", {
       id: this.id,
+      format,
     });
   };
 }