add lang selector, change 11labs model to support multilang

[bitbruder]

• This PR will add a new lang selector in the CLI.
• The picked value of this selector will be used to determine which locale should be used, when talking to the 11labs API.
• It will also change the 11labs model to a multilang one, support other languages than english.
• you could add a condition to use another model for english texts (turbo for example)
• my brain stopped working half way through, someone could be so kind to add it also to the area-select method
• for now, its working. I get a lot of [429] from the elevenlabs API, but I guess thats something to figure out for later