Microsoft Surface RT Support for Lightburn?

While possible this too will be non-trivial. There are quite a few hurdles to boot and install either Linux ARM or a modern Windows ARM implementation on the device.
Another hurdle is that this is a 32-bit device. LightBurn only has a 32-bit build for Windows.
Windows ARM should have a workable x86 emulation built-in. Running Windows 10 and then trying to emulate x86 on the 2GB RAM available will likely result in subpar performance. Then couple that with 1366x768 resolution and you’re likely to feel a little cramped.
An interesting side project surely but not practical.
Might work better as a remote desktop client for a different computer running LightBurn.