Also install .wasm.map files #572

Job	Run time
docker-master	1h 33m 46s
publish-standalone-dry-run	17s
test-standalone (master, dev, default)	58s
build-js-of-ocaml (master, 4.11.1)	14m 25s
generated-files (master)	27m 11s
build-wasm-of-ocaml (master, 4.14.1)	13m 56s
standalone-haskell (master)	52m 59s
test-amd64	2h 20m 8s
validate-docker-master	1m 50s
deploy-js-wasm-of-ocaml	31s
docker-check-all	3s
	5h 46m 4s

Provide feedback