[v8.x-backport] n-api: mark thread-safe function as stable by gabrielschulhof · Pull Request #25648 · nodejs/node

* Move `napi_get_uv_event_loop` into the `NAPI_VERSION >= 2` section
* Move `napi_open_callback_scope`, `napi_close_callback_scope`,
  `napi_fatal_exception`, `napi_add_env_cleanup_hook`, and
  `napi_remove_env_cleanup_hook` into the `NAPI_VERSION >= 3` section
* Added a missing `added` property to `napi_get_uv_event_loop` in the
  docs
* Added a `napiVersion` property to the docs and updated the parser and
  generator to use it.
* Added usage documentation

PR-URL: #19962
Backport-PR-URL: #25648
Reviewed-By: Gabriel Schulhof <gabriel.schulhof@intel.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

Fixes: #24249
PR-URL: #25556
Backport-PR-URL: #25648
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>