Avoid calling serializeSingleMessageInBatchWithPayload each time a message is added #573

Job	Run time
Build with the C++20 standard	9m 2s
Build the Wireshark dissector (ubuntu-20.04)	44s
Build the Wireshark dissector (macos-12)	53s
Run unit tests	11m 34s
Build CPP Client on macOS	7m 50s
Build CPP Client on Windows x64	34m 10s
Build CPP Client on Windows x86	32m 9s
Build RPM x86_64	14m 32s
Build Deb x86_64	16m 16s
Build Alpine x86_64	4m 39s
Check Completion	0s
	2h 11m 49s

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