Offer a way to retrieve the name that matched the query

[AdrienVH-c2c]

It would be great if it there was a way to retrieve the name that matched the query, like a new "matched_name_position" attribute :

// Pour /search/?q=ecole+anne+frank
"properties": {
    "label" : "Ecole Anne Frank 93250 Villemomble"
    "name" : ["Ecole Anne Frank", "Ecole de la Carrière", "Ecole du Parc"],
    "matched_name_position" : 0,
    "postcode" : "93250",
    "city" : "Villemomble"
    ...
}

// Pour /search/?q=ecole+carriere
"properties": {
    "label" : "Ecole Anne Frank 93250 Villemomble"
    "name" : ["Ecole Anne Frank", "Ecole de la Carrière", "Ecole du Parc"],
    "matched_name_position" : 1,
    "postcode" : "93250",
    "city" : "Villemomble"
    ...
}

// Pour /search/?q=ecole+du+parc
"properties": {
    "label" : "Ecole Anne Frank 93250 Villemomble"
    "name" : ["Ecole Anne Frank", "Ecole de la Carrière", "Ecole du Parc"],
    "matched_name_position" : 2,
    "postcode" : "93250",
    "city" : "Villemomble"
    ...
}

Thus, we would be able, in our front app, to display the "matched name" whenever the matched_name_position value is greater than 0 :

var customLabel = result.properties.name[0];
var matchedNamePosition = result.properties.matched_name_position;
if(matchedNamePosition > 0){
    var matchedName = result.properties.name[matchedNamePosition]
    customLabel += ' (anc. ' + matchedName + ')'
}
// Pour /search/?q=ecole+anne+frank, customLabel = "Ecole Anne Frank"
// Pour /search/?q=ecole+carriere, customLabel = "Ecole Anne Frank (anc. Ecole de la Carrière)"
// Pour /search/?q=ecole+du+parc, customLabel = "Ecole Anne Frank (anc. Ecole du Parc)"

Originally posted by @AdrienVH-c2c in #617 (comment)

[ericlecoutre]

That would also be useful for my usage of addok that handles Belgium multilinguism.