Добавить плейлисты к запросу по видеозаписями

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The issue title suggests adding playlists to a video records request, but the body is empty. First, examine the existing API endpoints for video records in the Django REST Framework codebase. Look for models related to videos and playlists, and understand how they are currently queried. Determine what 'adding playlists' means—likely extending a serializer or view to include playlist associations. Check for any related tests to understand the expected behavior.

Written by the indexing model from the issue text.