These are known as “bridges” and has been suggested before on our official Feature Request site here. Feel free to add your vote as well. https://lightburn.fider.io/posts/21/ability-to-make-bridges
For now, Perforation mode works reasonably well for this until we get proper bridges implemented. It does not affect the source art, or inner/outer shape sorting. Set a long “cut” and a short “skip” value, like 100mm / 0.5mm, and it’ll skip 0.5mm for every 100mm of cut. It’s also smart enough to make sure that if the shape is shorter than your cut length, it does the bridge first, so you always get at least one.