[Bug Fix] Fix for undefined MySQL library behavior. (#2834)

* MYSQL objects cannot be copied in a well defined way, this removes the copy and replaces it with another connection

* Change to share underlying pointers.

* Push up mutex changes

* Post rebase

* Formatting

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Co-authored-by: KimLS <KimLS@peqtgc.com>
Co-authored-by: Akkadius <akkadius1@gmail.com>

world/main.cpp

@@ -478,6 +478,8 @@ int main(int argc, char **argv)
 	LogInfo("Signaling HTTP service to stop");
 	LogSys.CloseFileLogs();
 
+	WorldBoot::Shutdown();
+
 	return 0;
 }