fully implement KeepAlive behavior

src/blitz/protocol/PacketHandler.cpp

@@ -0,0 +1,12 @@
+#include <blitz/protocol/PacketHandler.h>
+
+namespace blitz {
+namespace protocol {
+
+PacketHandler::PacketHandler(network::EnetConnection& a_Connection, EnttWorld& a_World) :
+	m_Connection(a_Connection), m_World(a_World) {}
+
+PacketHandler::~PacketHandler() {}
+
+}  // namespace protocol
+}  // namespace blitz