Add benchmarking measuring methods to `OS` to allow for platform specific overrides (e.g: can be used to hook into platform specific benchmarking and tracing capabilities).
- m4gr3d
Also contains some mouse pointer improvements.
This allows backporting documentation from the `master` branch more easily,
as it already features the `[kbd]` tag.
Co-authored-by: Yuri Sizov <11782833+YuriSizov@users.noreply.github.com>
