fdo#82969 Add AutoSpellcheck to tools menu

Change-Id: Ie5126f382dd78a50ffa50e77763521753942f202
Reviewed-on: https://gerrit.libreoffice.org/11201
Tested-by: Thomas Arnhold <thomas@arnhold.org>
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Reviewed-by: Thomas Arnhold <thomas@arnhold.org>