RFE: add speech-dispatcher plugin

[nullr0ute]

speech-dispatcher is a high-level device independent layer for TTS and is the universal interface that is used by GNOME and KDE for desktop speech integration.

https://devel.freebsoft.org/speechd

It supports a plugin interface so I believe a mimic speechd plugin would be a good initial integration for Mycroft/minic integration for general desktops.

[forslund]

Thanks for the suggestion, sounds like a good fit for mimic. Is this something you have experience with and would like to contribute?

[nullr0ute]

Sadly my level of experience is more at the distro maintenance level of speech-dispatcher. I'm the Fedora maintainer of it and have debugged and done small bits but no major feature development on it. There is a FLITE plugin so I'm not sure how diverged mimic is from that but it might be a useful starting point.

[forslund]

Yeah, the api hasn't diverged very much from flite yet so it will definitely be a good starting point. Thanks.