fully implement KeepAlive behavior

include/server/components/KeepAliveSession.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <Nazara/Core/Time.hpp>
+#include <cstdint>
+
+namespace blitz {
+namespace server {
+
+struct KeepAliveSessionComponent {
+	std::uint16_t m_PeerId;
+	std::uint64_t m_LastKeepAliveId;
+	Nz::Time m_LastTime;
+	bool m_RecievedResponse = false;
+};
+
+}  // namespace server
+}  // namespace blitz