Add rlMetric (#3)

* feat(metric): add rlMetric

* fix(metric): serializer fix

* feat(tls): add tlsContext

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Co-authored-by: maybegreat48 <email@hostname>

classes.cpp

@@ -9,6 +9,9 @@
 #include "player/CPlayerInfo.hpp"
 #include "rage/atArray.hpp"
 #include "rage/joaat.hpp"
+#include "rage/rlJson.hpp"
+#include "rage/rlMetric.hpp"
+#include "rage/tlsContext.hpp"
 #include "rage/vector.hpp"
 #include "script/scriptHandlerNetComponent.hpp"
 #include "script/scrNativeHandler.hpp"