Add additional language translation layers with special model

### What are you trying to do? Many models are very good with specific tasks but they lack support of other languages. Their output in other language than english is very poor. ### How should we solve this? The input could go first to translation layer with specific model for translation from any language to english, then the choosen model gets the input in english and outputs in english. The english output goes through another translation layer to convert from english to any language. ### What is the impact of not solving this? Only choosing models that work with specifc language (but still these are not perfect). ### Anything else? This model could be used for translation: https://huggingface.co/facebook/mbart-large-50-many-to-many-mmt That would be awesome functionality.