Error While Running Inference with Tibetan ('bo') Language

[tenzinchoedon]

I encountered an issue while attempting to fine-tune the AI4Bharat Indic-TTS model for the Tibetan language ('bo') and subsequently running inference. The following errors were displayed during the process:

1. "An error occurred for 'bo'."
2. "An error occurred: Provide a valid language ID, i.e., ISO code. Available codes are: {'hi', 'en', 'nl', 'am', 'bg', 'pl', 'ru', 'sk', 'de', 'es', 'it', 'ur', 'ja', 'fa', 'ar', 'fr', 'zh', 'mr', 'my', 'el', 'kk', 'hy', 'da'}."

It seems the model or the phonemizer configuration does not support 'bo' as a valid ISO language code.

• The phoneme language was updated to 'bo' during fine-tuning, but it appears the configuration or dependencies may not include Tibetan as a supported language.
• For context, Hindi ('hi') works successfully for inference

Could you please advise on how to proceed with adding support for Tibetan or suggest any required configurations or dependencies?
@GokulNC @gowtham1997 @ryback123 @divkakwani @rahular