[Performance] Significantly Improve Client Network Resends (#4629)

* [Performance] Significantly Improve Client Network Resends

* Update daybreak_connection.cpp

* Improve resend algorithm to be exact about when to resend

common/net/daybreak_connection.h

@@ -181,6 +181,11 @@ namespace EQ
 			Timestamp m_close_time;
 			double m_outgoing_budget;
 
+			// resend tracking
+			size_t m_resend_packets_sent = 0;
+			size_t m_resend_bytes_sent = 0;
+			bool m_acked_since_last_resend = false;
+
 			struct DaybreakSentPacket
 			{
 				DynamicPacket packet;