chore: Re-simplify IndexVersionType and MessageLevel with c++20

This sets our compiler requirements to gcc 11 and clang 13. If we
forgo the use of `using enum` we can drop to gcc 10 and clang 10 but
that means using `MessageLevel::Enum::Unknown` for direct enum access

Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>

launcher/launch/LaunchTask.cpp

@@ -217,7 +217,7 @@ shared_qobject_ptr<LogModel> LaunchTask::getLogModel()
 bool LaunchTask::parseXmlLogs(QString const& line, MessageLevel level)
 {
     LogParser* parser;
-    switch (level) {
+    switch (static_cast<MessageLevel::Enum>(level)) {
         case MessageLevel::StdErr:
             parser = &m_stderrParser;
             break;
@@ -234,7 +234,7 @@ bool LaunchTask::parseXmlLogs(QString const& line, MessageLevel level)
         auto& model = *getLogModel();
         model.append(MessageLevel::Error, tr("[Log4j Parse Error] Failed to parse log4j log event: %1").arg(err.value().errMessage));
         return false;
-    } 
+    }
 
     if (items.isEmpty())
         return true;