PLT-6475: Elasticsearch Indexing Worker. (#6879)

store/store.go

@@ -168,6 +168,7 @@ type PostStore interface {
 	GetPostsCreatedAt(channelId string, time int64) StoreChannel
 	Overwrite(post *model.Post) StoreChannel
 	GetPostsByIds(postIds []string) StoreChannel
+	GetPostsBatchForIndexing(startTime int64, limit int) StoreChannel
 }
 
 type UserStore interface {