feat: allow filtering with null (no) rating

lib/types.ts

@@ -41,6 +41,7 @@ export type GenericResource = {
   meta?: {
     image?: string;
     author?: string;
+    rating?: number;
     average?: string;
     thumbnail?: string;
   };
@@ -66,9 +67,4 @@ export type TypesenseDocument = {
   image?: string;
 };
 
-export enum ResourceStatus {
-  COMPLETED = "completed",
-  NOT_COMPLETED = "not_completed",
-}
-
 export type SearchResult = SearchResponse<TypesenseDocument>;