As a user, I want a method for translating an input text using the MADLAD-400 model, so that I can generate translations for evaluation.

[laurejt]

Needs to support Chinese, Japanese, English, and Spanish but as possible make it easy to support other model-supported languages.

Use the MADLAD400-7B HuggingFace model.

Inputs:

• tgt_lang: str: Target language. Use ISO 639 language codes
• text: str: Text to be translated from the source to target language

Output: The translated text as a string.

NOTE: Unlike the other translation models, this model only needs the target language.