refactor: allow copy operation with whitelist

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

launcher/FileSystem.cpp

@@ -174,7 +174,7 @@ bool copy::operator()(const QString& offset)
 
     // Function that'll do the actual copying
     auto copy_file = [&](QString src_path, QString relative_dst_path) {
-        if (m_blacklist && m_blacklist->matches(relative_dst_path))
+        if (m_matcher && (m_matcher->matches(relative_dst_path) == !m_whitelist))
             return;
 
         auto dst_path = PathCombine(dst, relative_dst_path);