better example

include/examples/PacketExample.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <sp/default/DefaultPacket.h>
+#include <sp/protocol/Field.h>
+#include <sp/protocol/MessageBase.h>
+
+enum PacketId {
+	KeepAlive = 0,
+};
+
+using KeepAliveFields = std::tuple<sp::Field<std::uint64_t>>;
+
+class KeepAlivePacket : public sp::MessageBase<sp::PacketMessage,
+							sp::option::StaticNumIdImpl<KeepAlive>,		// provide idImpl() if needed
+							sp::option::DispatchImpl<KeepAlivePacket>,	// provide dispatchImpl() if needed
+							sp::option::FieldsImpl<KeepAliveFields>		// provide access to fields
+							> {};
+
+using AllPackets = std::tuple<KeepAlivePacket>;
+
+#include <sp/default/DefaultPacketHandler.h>