doc: add added in versions to fs.Stats properties

Adds the added in label on the documentation for each one of the
properties of Class: fs.Stats

PR-URL: https://github.com/nodejs/node/pull/19266
Fixes: https://github.com/nodejs/node/issues/19178


Reviewed-By: Adrian Estrada <edsadr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>