Add back scripting features in sheet
This has been removed since Kross is deprecated and for words the functionality was already disabled. See 38f04b4c
Interesting class from the old Kross based implementation which could be reused in a QJSEngine or Python for Qt implementation: https://invent.kde.org/office/calligra/-/blob/19a23471fbccde4beb95530673769ae9aa04a3f6/sheets/plugins/scripting/ScriptingFunction.cpp https://invent.kde.org/office/calligra/-/blob/19a23471fbccde4beb95530673769ae9aa04a3f6/sheets/plugins/scripting/ScriptingListener.h