Started work on custom allocator #166

Job	Run time
generate_header	16s
run-msvc / msvc (14.3, false, Debug)	2m 6s
run-gcc / gcc (11, Debug)	2m 1s
run-msvc / msvc (14.3, false, Release)	2m 13s
run-clang / clang (17, false, Debug)	1m 56s
run-gcc / gcc (11, Release)	1m 55s
run-msvc / msvc (14.3, true, Debug)	2m 8s
run-clang / clang (17, false, Release)	1m 55s
run-gcc / gcc (12, Debug)	2m 15s
run-msvc / msvc (14.3, true, Release)	2m 12s
run-clang / clang (17, true, Debug)	1m 40s
run-gcc / gcc (12, Release)	2m 11s
run-clang / clang (17, true, Release)	1m 43s
run-gcc / gcc (13, Debug)	2m 11s
run-clang / clang (18, false, Debug)	1m 55s
run-gcc / gcc (13, Release)	2m 8s
run-clang / clang (18, false, Release)	1m 57s
run-clang / clang (18, true, Debug)	2m 13s
run-clang / clang (18, true, Release)	1m 42s
	36m 37s

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