timers: introduce timers/promises

Move the promisified timers implementations into a new sub-module
to avoid the need to promisify. The promisified versions now return
the timers/promises versions.

Also adds `ref` option to the promisified versions

```js
const {
  setTimeout,
  setImmediate
} = require('timers/promises');

setTimeout(10, null, { ref: false })
  .then(console.log);

setImmediate(null, { ref: false })
  .then(console.log);

```

Signed-off-by: James M Snell <jasnell@gmail.com>

PR-URL: https://github.com/nodejs/node/pull/33950
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/node.gyp b/node.gyp
index 0af72d48c25..6d9e9cb3fc0 100644
--- a/node.gyp
+++ b/node.gyp
@@ -85,6 +85,7 @@
       'lib/_stream_wrap.js',
       'lib/string_decoder.js',
       'lib/sys.js',
+      'lib/timers/promises.js',
       'lib/timers.js',
       'lib/tls.js',
       'lib/_tls_common.js',