troubleshooter: deferred message for fatal errors (#491)

## Description of change
When the game logs a fatal error message, queue up a deferred message
for the troubleshooter.

src/spice2x/util/deferlog.h

@@ -10,6 +10,7 @@ namespace deferredlogs {
     extern const std::initializer_list<std::string> SUPERSTEP_SOUND_ERROR_MESSAGE;
 
     void set_softid(const std::string& softid);
+    void report_fatal_message();
     void defer_error_messages(std::initializer_list<std::string> messages);
     void dump_to_logger(bool is_crash=false);
 }