Implement transformItems to ommit unnecessary props from items

be/src/main.ts

@@ -1,4 +1,5 @@
 import { fetchFromApi } from "./fetchItemsFromJellyfin.ts";
+import { transformItems } from "./itemHelper.ts";
 
 interface JellyfinApiResponse {
   Items?: [],
@@ -12,8 +13,13 @@ const run = async () => {
     TotalRecordCount: totalItemCount
   }: JellyfinApiResponse = await fetchFromApi();
 
-  console.log("items:", items);
+
+  const transformedItems = transformItems(items);
+  console.log("transformedItems:", transformedItems);
   console.log("totalItemCount:", totalItemCount);
+
+  // write to db file
+  // update db file
 }
 
 run();