add tests

test/blitz/protocol/packet/PacketFactory_test.cpp

@@ -0,0 +1,15 @@
+#include <td/protocol/packet/PacketFactory.h>
+
+static int Test() {
+	for (std::size_t i = 0; i < static_cast<int>(td::protocol::PacketType::PACKET_COUNT); i++) {
+		td::protocol::PacketType packetType = td::protocol::PacketType(i);
+
+		if (td::protocol::PacketFactory::CreateReadOnlyPacket(packetType)->GetType() != packetType)
+			return 1;
+	}
+	return 0;
+}
+
+int main() {
+	return Test();
+}