feat(chats): add per-user chat archive support

app/database/models.py

@@ -1,5 +1,5 @@
 from app.auth.models import EmailVerificationToken, PasswordResetToken
-from app.chats.models import Chat, ChatMember
+from app.chats.models import Chat, ChatMember, ChatUserSetting
 from app.email.models import EmailLog
 from app.media.models import Attachment
 from app.messages.models import Message, MessageHidden, MessageIdempotencyKey, MessageReaction, MessageReceipt
@@ -10,6 +10,7 @@ __all__ = [
     "Attachment",
     "Chat",
     "ChatMember",
+    "ChatUserSetting",
     "EmailLog",
     "EmailVerificationToken",
     "Message",