I imagine it would be a big lift. Asahi linux is managing through reverse engineering the hardware support, without any official documentation. Even with official documentation it would be a significant change from other aarch64 hardware.
I'm curious why I would want to dual boot Windows when there's a perfectly good hypervisor and paravirtualization built into macOS?
Arm-based windows support via Parallels does work, but AFAICT there's no official way to buy a Windows license due to a Microsoft/Qualcomm partnership.