_rozi Wiktionary and Google Translate per Robert Ziegler

This add-on was inspired by the former "Wiktionary an Google Translate" which does not work with FF Quantum.
This AddOn provides the translation and definition of a selected word as a tooltip.
The selection is made by positioning the mouse pointer over the word (Note: The FF window must be the currently active window)
Alternatively, several words can also be selected by marking. In both cases the key combination [Ctrl + Shift] opens the tooltip. Tooltip will be closed by [Esc] or mouse click.
For the translation Google-Translate is used, for the definition it is wiktionary.org
Currently only the translation into German is implemented, for the definition of the English and German Dictionary is questioned.