This is definitely something I'd love to see contributed - ideally leading towards the integration of automatic deb building into our build process.

Until then, the best we have is these more generic Linux build instructions: https://github.com/sonic-pi-net/sonic-pi/blob/main/BUILD-LINUX.md

@lilyinstarlight has made some critical steps in our build system recently towards making this a reality. I also believe she is in the process of starting to document it to provide some assistance to package maintainers.