Meson

libnixt: add Serialize #1771

Job	Run time
nix-build-develop-clang (none, release, true)	2m 51s
nix-build-develop-gcc (none, release, true)	3m 12s
nix-build-develop-clang (none, release, false)	2m 51s
nix-build-develop-gcc (none, release, false)	3m 8s
nix-build-develop-clang (none, debug, true)	2m 38s
nix-build-develop-gcc (none, debug, true)	3m 6s
nix-build-develop-clang (none, debug, false)	2m 34s
nix-build-develop-gcc (none, debug, false)	3m 2s
nix-build-develop-gcc (undefined, release, true)	6m 46s
nix-build-develop-gcc (undefined, release, false)	6m 29s
nix-build-develop-gcc (undefined, debug, true)	3m 41s
nix-build-develop-gcc (undefined, debug, false)	3m 35s
	43m 53s

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