What kind of smart lock can I add to my door?
Yes it does seem that they are available. 

That is a Mortise lock-set, I did a web search for "smart mortise lock" and found a couple, the question is weather they will fit your particular set up ( and can you afford one ).

You will need to do some research. Most of the ones i see are set up with the latch on the bottom and the bolt on the top but yours is opposite that. 

Now go forth and conquer.

If you live in a big city find a dedicated locksmith/lock-set retailer.