Be more tolerant to how GBFS file names are specified

There's at least one provider adding the ".json" suffix in the discovery
response, so let's handle that as well. Gives us GBFS coverage e.g. in
Brussels.

autotests/gbfstest.cpp

@@ -4,6 +4,7 @@
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
+#include <../src/lib/gbfs/gbfs.cpp>
 #include <gbfs/gbfsservice.h>
 
 #include <QObject>
@@ -23,6 +24,14 @@ private Q_SLOTS:
         QStandardPaths::setTestModeEnabled(true);
     }
 
+    void testFileType()
+    {
+        QCOMPARE(GBFS::typeForKeyName(u"system_information"), GBFS::SystemInformation);
+        QCOMPARE(GBFS::typeForKeyName(u"geofencing_zones"), GBFS::GeofencingZones);
+        QCOMPARE(GBFS::typeForKeyName(u"geofencing_zones.json"), GBFS::GeofencingZones);
+        QCOMPARE(GBFS::typeForKeyName(u"geofencing_zones_information"), GBFS::Unknown);
+    }
+
     void testServiceRepo()
     {
         const auto &services = GBFSServiceRepository::services();

src/lib/gbfs/gbfs.cpp

@@ -42,7 +42,7 @@ GBFS::FileType GBFS::typeForKeyName(QStringView v)
 {
     const auto s = v.toUtf8();
     for (auto it = std::begin(file_info_map); it != std::end(file_info_map); ++it) {
-        if (std::strcmp((*it).fileName, s.constData()) == 0) {
+        if (std::strcmp((*it).fileName, s.constData()) == 0 || (s.endsWith(".json") && std::strncmp((*it).fileName, s.constData(), s.size() - 5) == 0)) {
             return static_cast<GBFS::FileType>(std::distance(std::begin(file_info_map), it));
         }
     }