Support `round`/`trunc`/`ceil`/`floor` for `Bool`

`round`/`trunc`/`ceil`/`floor` for `Bool` was introduced in Julia 1.8 (https://github.com/JuliaLang/julia/pull/25085), it would be nice to add support in `Compat` for that.

Related to https://github.com/oxinabox/LayeredLayouts.jl/pull/26.