feat(fs): add localPathIsSymbolicLink and readLocalSymlink (#16673)

* fix: add localPathIsSymbolicLink and readLocalSymlink to fs module

* Update lib/util/fs/index.ts

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>

* Update lib/util/fs/index.ts

* Apply suggestions from code review

Co-authored-by: Sergei Zharinov <zharinov@users.noreply.github.com>

Co-authored-by: Michael Kriese <michael.kriese@visualon.de>
Co-authored-by: Rhys Arkins <rhys@arkins.net>
Co-authored-by: Sergei Zharinov <zharinov@users.noreply.github.com>