WIP: VegaFusion runtime in a Worker for wasm support #1015

Job	Run time
build-vegafusion-python-linux-64	15m 6s
build-vegafusion-python-linux-arm64	15m 59s
build-vegafusion-python-osx-arm64	25m 10s
build-vegafusion-python-osx-64	29m 43s
build-vegafusion-python-win-64	42m 17s
build-vegafusion-server-linux-64	16m 37s
build-vegafusion-server-linux-arm64	14m 27s
build-vegafusion-server-osx-64	44m 13s
build-vegafusion-server-osx-arm64	20m 11s
build-vegafusion-server-win-64	37m 47s
build-vegafusion-wasm	11m 22s
check-rust	46s
check-vegafusion-python	10m 54s
test-rust (ubuntu-20.04)	23m 56s
test-rust (windows-2022)	44m 58s
test-rust (macos-14)	25m 2s
test-vegafusion-python-linux-64	25m 32s
test-vegafusion-python-osx-arm64	1m 15s
test-vegafusion-python-win-64	2m 10s
	6h 47m 25s

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