Expose fixHref as an importable function

[jwmann]

Having the <Link> component is super nice but there are places where I'd like to get a string instead of an anchor element.

Is there a way you can expose the internal fixHref function to be used?

[aralroca]

Currently the fixHref is used internally and not directly exposed to the API of the library. This is why is not in the documentation. However, you can use it in this way:

import fixHref from 'next-translate/_helpers/fixHref'

//...
const { t, lang } = useTranslation()
console.log(fixHref('/test', lang)) // -> /en/test

Perhaps we could consider to move fixHref and fixAs to the first level API next-translate/fixHref and next-translate/fixAs, because they are stable and useful.

[aralroca]

I opened a PR so after 0.16.0 you can import directly from import fixHref from 'next-translate/fixHref'.