[buteo-mtp] Add %h to export home directory. Contributes to JB#51442

This adds %h that expands to user's home directory allowing
configuration to refer directly to user's home instead of using /home/%u
which can be incorrect.

Signed-off-by: Tomi Leppänen <tomi.leppanen@jolla.com>

mts/platform/storage/fsstorageplugin/fsstoragepluginfactory.cpp

@@ -136,6 +136,10 @@ QList<StoragePlugin *>FSStoragePluginFactory::create(quint32 storageId)
             if (pattern.contains("%u")) {
                 pattern.replace("%u", QProcessEnvironment::systemEnvironment().value("USER"));
             }
+            // If path contains "%h" replace it with the current home directory
+            if (pattern.contains("%h")) {
+                pattern.replace("%h", QProcessEnvironment::systemEnvironment().value("HOME"));
+            }
             QString description;
             if (!pattern.contains('*') && !pattern.contains('?')) {
                 description = storage.attribute("description");