Mac arm64 prebuild

I'm not being able to package an electron app for the new mac m1 chip. It says it couldn't find leveldown binaries for that system.

These are the binaries found:

<img width="396" alt="Screen Shot 2021-06-10 at 10 11 34" src="https://user-images.githubusercontent.com/6791788/121489331-47377a80-c9d4-11eb-947a-615286aa08db.png">

Any help? Thanks :)