Ajout d'un header pour savoir s'il y a une page suivante

Ce header permet de conditioner la présence d'un bouton pour voir la
page suivante des articles.

sources/AppBundle/Controller/Planete/ArticlesController.php

@@ -54,6 +54,7 @@ public function __invoke(Request $request): Response
                 'Content-Type' => 'application/json',
                 'X-Pagination-Total' => $totalCount,
                 'X-Pagination-Per-Page' => $perPage,
+                'X-Pagination-Has-Next-Page' => $totalCount > $page * $perPage,
             ]
         );
     }

tests/behat/features/Api/PlanetePHPApi.feature

@@ -6,6 +6,7 @@ Feature: PlanetePHP API routes
     And the response header "Content-Type" should equal "application/json"
     And the response header "X-Pagination-Total" should equal 22
     And the response header "X-Pagination-Per-Page" should equal 20
+    And the response header "X-Pagination-Has-Next-Page" should match '#^1$#'
     And the json response has the key "title" with value "Un titre"
     And the json response has the key "url" with value "https:\/\/afup.org\/url.html"
     And the json response has the key "author" with value "Un super auteur"
@@ -17,6 +18,7 @@ Feature: PlanetePHP API routes
     And the response header "Content-Type" should equal "application/json"
     And the response header "X-Pagination-Total" should equal 22
     And the response header "X-Pagination-Per-Page" should equal 20
+    And the response header "X-Pagination-Has-Next-Page" should match '#^$#'
     And the json response has the key "title" with value "Un titre 18"
     And the json response has the key "url" with value "https:\/\/afup.org\/url-18.html"
     And the json response has the key "author" with value "Un super auteur 18"