[AI Translation] Support the glossary feature on providers other than DeepL #129

Hello,

This is a request for improvement.

When using a model such as ChatGPT, currently it's impossible to add a glossary for translation, or else it must be added directly in the prompt, which makes things less obvious for non-developers.

Would it be possible to add an option that would allow the plugin to be linked to a glossary model for instance?

The idea would be to have a model with this kind of schema:

Word (Single line string):

• Required? Yes
• Enable localization on this field? Yes

That very naive but code wise, it could look like that:

if (glossary.length > 0) {
    prompt = `${prompt}\n\nGLOSSARY\nUse the following glossary of terms for translation: ${glossary.reduce((accumulator, { word }) => `${accumulator}\n- ${fromLocale}: ${word[fromLocale]}, ${toLocale}: ${word[toLocale]}`, '')}.`
}

Assuming that the glossary variable is the content from the model (I don't know how to retrieve it plugin wise).

Otherwise, the plugin is already super nice, congratulation.