Add support for Accept Language in Geolocators

[dev-newvisibility]

Q	A
Bug fix?	no
New feature?	yes
BC breaks?	no
Deprecations?	no
License	MIT

What's in this PR?

Both Nominatim and Google Geolocator support additional parameters to optimize the result of the query, this PR adds a new optional parameter to the GeolocatorInterface::locate method to pass additional options specific for a single query.

As an initial implementation this PR adds the ability to pass to the geolocator an "accept language" string.

Why?

Google Geolocator, if you don't pass the language query string parameter or an Accept-Language http header, tries to infer the desired results' language from the remote IP that it's calling its API, but the server in which runs the Sulu instance may not be located in the same country of the user, this gives a wrong output (wrong labels and/or wrong order).

Example Usage

[alexander-schranz]

I'm here a little bit splitted what the correct language to send to this controller should be. Is it really the accept language of the browser sending us or when used inside translateable form if we should send then the language to the controller of that content. That would mean on a german form they may need to input Wien and on the english Vienna for the same result. Or if we stay with the browser language it even could be if the browser language is fr even on german and english the best result would be the user then inputting Vienne. 🤔

@sulu/core-developer what do you think?

[Prokyonn]

I'm here a little bit splitted what the correct language to send to this controller should be. Is it really the accept language of the browser sending us or when used inside translateable form if we should send then the language to the controller of that content. That would mean on a german form they may need to input Wien and on the english Vienna for the same result. Or if we stay with the browser language it even could be if the browser language is fr even on german and english the best result would be the user then inputting Vienne. 🤔

@sulu/core-developer what do you think?

By default, I would recommend using the locale of the request to avoid inconsistencies, such as displaying an English address in a German format. However, I would still provide the option to always use the browser language, in case the project requires it.