WIP build: wasm-pack support attempt #2

Job	Run time
build linux pkg-config	39s
build vcpkg (macos-latest)	3m 12s
build bundled (macos-latest)	2m 26s
build vcpkg (ubuntu-latest)	1m 25s
build bundled (ubuntu-latest)	1m 58s
build vcpkg (windows-latest)	9m 35s
build bundled (windows-latest)	3m 39s
build bundled (--release, macos-latest)	1m 50s
build bundled (--release, ubuntu-latest)	2m 2s
build bundled (--release, windows-latest)	6m 22s
build bundled (static-link, macos-latest)	2m 23s
build bundled (static-link, ubuntu-latest)	1m 56s
build bundled (static-link, windows-latest)	4m 51s
build bundled (static-link, --release, macos-latest)	2m 6s
build bundled (static-link, --release, ubuntu-latest)	1m 58s
build bundled (static-link, --release, windows-latest)	6m 35s
	52m 57s

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