Signing and broadcasting transactions (Electrum-like)

[alxanko]

It would be great to add the feature of signing and broadcasting transactions.
I would like to use TON wallet on an offline device and sign transactions there.
Then broadcast that transaction via online device.

Do you see it meaningful to add such a feature in that wallet application?
I don't see any implementation of it.
Only that one, but it is not user-friendly :)
https://github.com/ton-defi-org/ton-offline-transaction

Thanks.