Change API enums to enum class, remove now redundant prefixing

* This gives a little nicer syntax, a bit better type safety, and also
  reflects better for SWIG bindings. Overall it's a minor change but
  better.
* We don't update the C# UI at all, since it's soon to be removed and
  not worth the effort/code churn.
* For now so we're ABI compatible with C#, all enums are uint32_t, but
  that is an obvious optimisation in future to reduce struct packing.
* We avoid 'None' as an enum value, because it's a reserved word in
  python so will cause problems generating bindings.

qrenderdoc/Windows/Dialogs/RemoteManager.cpp

@@ -604,13 +604,13 @@ void RemoteManager::on_connect_clicked()
       else
       {
         IRemoteServer *server = NULL;
-        ReplayCreateStatus status =
+        ReplayStatus status =
             RENDERDOC_CreateRemoteServerConnection(host->Hostname.toUtf8().data(), 0, &server);
         if(server)
           server->ShutdownServerAndConnection();
         setRemoteServerLive(node, false, false);
 
-        if(status != eReplayCreate_Success)
+        if(status != ReplayStatus::Succeeded)
           RDDialog::critical(this, tr("Shutdown error"),
                              tr("Error shutting down remote server: %1").arg(ToQStr(status)));
       }