Meson

libnixt: add Serialize #1766

Job	Run time
nix-build-develop-clang (none, release, true)	2m 50s
nix-build-develop-gcc (none, release, true)	3m 15s
nix-build-develop-clang (none, release, false)	2m 59s
nix-build-develop-gcc (none, release, false)	3m 17s
nix-build-develop-clang (none, debug, true)	2m 39s
nix-build-develop-gcc (none, debug, true)	3m 5s
nix-build-develop-clang (none, debug, false)	2m 43s
nix-build-develop-gcc (none, debug, false)	3m 3s
nix-build-develop-gcc (undefined, release, true)	6m 53s
nix-build-develop-gcc (undefined, release, false)	6m 45s
nix-build-develop-gcc (undefined, debug, true)	3m 37s
nix-build-develop-gcc (undefined, debug, false)	3m 39s
	44m 45s

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