Allow the User to change the eSpeak-NG voice used

Is your feature request related to a problem? Please describe. Adding an entry for Speech Dispatcher to allow the user to enable a voice variant.

Describe the solution you'd like Something like "EspeakVoice" in espeak-ng.conf would be nice to have...

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Add any other context about the feature request here.