feat: implement Immich integration with CRUD API, add serializer, and enhance frontend components

backend/server/integrations/serializers.py

@@ -0,0 +1,13 @@
+from .models import ImmichIntegration
+from rest_framework import serializers
+
+class ImmichIntegrationSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ImmichIntegration
+        fields = '__all__'
+        read_only_fields = ['id', 'user']
+
+    def to_representation(self, instance):
+        representation = super().to_representation(instance)
+        representation.pop('user', None)
+        return representation