An simple compile time i18n implementation in Rust.
It throws a compilation error if the translation key is not present, but since the `lang` argument is dynamic it will panic if the language has not been added for the matching key.
Have a `locales/` folder somewhere in your app, root, src, anywhere. with `.json` files, nested in folders or not.
It uses a glob pattern: `**/locales/**/*.json` to match your translation files.
the files must look like this:
```json
{
"err.answer.all": {
"fr": "Échec lors de la récupération des réponses",
"en": "Failed to retrieve answers"
},
"err.answer.delete.failed": {
"fr": "Échec lors de la suppression de la réponse",
"en": "Failed to delete answer"
}
}
```
Any number of languages can be added, but you should provide them for everything since it will panic if a language is not found when queried for a key.
