Request: Support more than one voice for language switching

[fadelkon]

Related to #7 , my use case is different. I would like to use Firefox Narrate feature to read for me aloud articles.

Right now, once Pied is set up, I can already do that changing the selected voice at Pie, and returning to Firefox, but it would be awesome to let Firefox list all the available voices. As far as I understand, the challenge is to write a generic command for the GenericExecuteSynth option and then list as many AddVoice as voices installed, right?

Really, it's been years desiring some human sounding voices in Debian and this is just awesome. Thank you a lot for building this humble bridge between piper and speech-dispatcher :)

Just a little more and this tool would be gorgeous for me.

By the way, I don't depend on this to read, so if there are tasks that can improve the experience for non-reading people, I suggest you to prioritise them.