improve logging

src/log.cpp

@@ -0,0 +1,6 @@
+#include "log.h"
+
+Q_LOGGING_CATEGORY(mainLog, "main");
+Q_LOGGING_CATEGORY(discordLog, "discord");
+Q_LOGGING_CATEGORY(userscriptLog, "userscript");
+Q_LOGGING_CATEGORY(virtmicLog, "virtmic");