This has been available if you use https://typelevel.org/cats/ on Foldables for a while, for example:

import cats.syntax.foldable._

val list = List(1, 2, 3, 4, 5)
println(list.sliding2)
// List((1,2), (2,3), (3,4), (4,5))

sliding3, sliding4, etc are also defined, see the scaladoc for more information.