Absolutely. If I had the time I'd write it myself. A practiced nostr coder could do it in a day or two, would take me a few weeks or more due to research.
It needs to do 3 things: 
1. Handle bip-32 derivations using nsec/npub formatting.
2. Handle signing via derivation.
3. Be modular so that any client can implement it.
Most of this code exists, it just requires adaptation. Primary reason I haven't done it over the last year is that without also making a client I couldn't test it. I also didn't know about NAK.