Utils: Wrap various file system iteration flags and filters

... into a single class.

This makes passing them around as a whole easier, and opens a path
to have "generic" filters in form of a lambda or such.

Change-Id: Ibf644b2fedcf0f1a35258030710afff8f5873f88
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cmakeprojectmanager/fileapiparser.cpp

@@ -948,10 +948,7 @@ FilePath FileApiParser::scanForCMakeReplyFile(const FilePath &buildDirectory)
     if (!replyDir.exists())
         return {};
 
-    const FilePaths entries = replyDir.dirEntries({"index-*.json"},
-                                                  QDir::Files,
-                                                  QDirIterator::NoIteratorFlags,
-                                                  QDir::Name);
+    const FilePaths entries = replyDir.dirEntries({{"index-*.json"}, QDir::Files}, QDir::Name);
     return entries.isEmpty() ? FilePath() : entries.first();
 }