Adds experimental implementations of the yield and wait APIs being
explored at https://github.com/WICG/scheduling-apis.
When I asked the WHATWG folks about the possibility of standardizing the
[awaitable versions of setTimeout/setImmediate](https://github.com/whatwg/html/issues/7340)
that we have implemented in `timers/promises`, they pointed at the work
in progress scheduling APIs draft as they direction they'll be going.
While there is definitely a few thing in that draft that have
questionable utility to Node.js, the yield and wait APIs map cleanly to
the setImmediate and setTimeout we already have.
Signed-off-by: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/40909
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
