JSON wizards: Read additional paths from settings

Opens possibilities like the installers writings some.

Change-Id: Ie8c87731fb6bb9c7129032f64878e42e9bcf4cf0
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.cpp

@@ -513,6 +513,9 @@ FilePaths &JsonWizardFactory::searchPaths()
                          Core::ICore::resourcePath(WIZARD_PATH)};
         for (const QString &environmentTemplateDirName : environmentTemplatesPaths())
             m_searchPaths << FilePath::fromString(environmentTemplateDirName);
+        m_searchPaths << Utils::transform(
+            Core::ICore::settings()->value("Wizards/SearchPaths").toStringList(),
+            [](const QString &s) { return FilePath::fromUserInput(s); });
     }
 
     return m_searchPaths;