Add swap placement tool #1520

Job	Run time
stylecheck	26s
build-debug	22m 16s
build (ubuntu:focal, g++, gcc, all)	21m 8s
build (ubuntu:focal, g++, gcc, horizon.so)	6m 46s
build-pr-review	5m 33s
build (ubuntu:jammy, g++, gcc, all)	25m 25s
build (ubuntu:jammy, g++, gcc, horizon.so)	6m 8s
build-arch (all)	21m 2s
build (ubuntu:lunar, g++, gcc, all)	21m 31s
build-opensuse (all)	20m 13s
build-arch (horizon.so)	6m 12s
build (ubuntu:lunar, g++, gcc, horizon.so)	8m 1s
build-opensuse (horizon.so)	7m 37s
build (debian:bullseye, g++, gcc, all)	19m 27s
build (debian:bullseye, g++, gcc, horizon.so)	6m 23s
build (debian:bookworm, clang, clang, all)	16m 40s
build (debian:bookworm, clang, clang, horizon.so)	5m 23s
build (debian:bookworm, g++, gcc, all)	23m 7s
build (debian:bookworm, g++, gcc, horizon.so)	8m 46s
	4h 12m 4s

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