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

backend/server/integrations/models.py

@@ -1,12 +1,15 @@
 from django.db import models
 from django.contrib.auth import get_user_model
+import uuid
 
 User = get_user_model()
 
 class ImmichIntegration(models.Model):
     server_url = models.CharField(max_length=255)
     api_key = models.CharField(max_length=255)
-    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    user = models.ForeignKey(
+        User, on_delete=models.CASCADE)
+    id = models.UUIDField(default=uuid.uuid4, editable=False, unique=True, primary_key=True)
 
     def __str__(self):
         return self.user.username + ' - ' + self.server_url