Initial commit - SoundWave v1.0

- Full PWA support with offline capabilities
- Comprehensive search across songs, playlists, and channels
- Offline playlist manager with download tracking
- Pre-built frontend for zero-build deployment
- Docker-based deployment with docker compose
- Material-UI dark theme interface
- YouTube audio download and management
- Multi-user authentication support

backend/download/serializers.py

@@ -0,0 +1,22 @@
+"""Download serializers"""
+
+from rest_framework import serializers
+from download.models import DownloadQueue
+
+
+class DownloadQueueSerializer(serializers.ModelSerializer):
+    """Download queue serializer"""
+
+    class Meta:
+        model = DownloadQueue
+        fields = '__all__'
+        read_only_fields = ['added_date', 'started_date', 'completed_date']
+
+
+class AddToDownloadSerializer(serializers.Serializer):
+    """Add to download queue"""
+    urls = serializers.ListField(
+        child=serializers.URLField(),
+        allow_empty=False
+    )
+    auto_start = serializers.BooleanField(default=False)