Please add Persian/Farsi language support for pico2wave TTS
Pico2wave is using the third party library Pico TTS (GitHub - naggety/picotts: Pico TTS: text to speech voice sinthesizer from SVox, included in Android AOSP) to generate the sound.
It is Pico TTS that needs to add the extra language for it to become available in HA.
Synthesizing human languages are not an easy task, so don’t get your hopes up.