Replace IPathMatcher stuff with Filter

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

launcher/RecursiveFileSystemWatcher.cpp

@@ -78,7 +78,7 @@ QStringList RecursiveFileSystemWatcher::scanRecursive(const QDir& directory)
     }
     for (const QString& file : directory.entryList(QDir::Files | QDir::Hidden)) {
         auto relPath = m_root.relativeFilePath(directory.absoluteFilePath(file));
-        if (m_matcher->matches(relPath)) {
+        if (m_matcher(relPath)) {
             ret.append(relPath);
         }
     }