Adding Seq.traverse & sequence functions #877

Job	Run time
build-devcontainer	9m 11s
fable-npm-build (ubuntu-latest, 18)	1m 52s
dotnet-build (Debug, ubuntu-latest)	3m 6s
fable-npm-build (ubuntu-latest, 20)	1m 59s
fable-python-build (ubuntu-latest, 3.10)	2m 36s
dotnet-build (Debug, windows-latest)	5m 35s
fable-npm-build (ubuntu-latest, latest)	2m 14s
dotnet-build (Debug, macOS-latest)	3m 15s
fable-python-build (ubuntu-latest, 3.11)	2m 26s
fable-npm-build (windows-latest, 18)	4m 34s
fable-python-build (ubuntu-latest, 3.12)	2m 21s
dotnet-build (Release, ubuntu-latest)	3m 10s
fable-npm-build (windows-latest, 20)	4m 33s
fable-python-build (windows-latest, 3.10)	5m 36s
fable-npm-build (windows-latest, latest)	6m 9s
dotnet-build (Release, windows-latest)	5m 19s
fable-python-build (windows-latest, 3.11)	3m 23s
fable-npm-build (macOS-latest, 18)	1m 37s
dotnet-build (Release, macOS-latest)	3m 29s
fable-python-build (windows-latest, 3.12)	5m 14s
fable-npm-build (macOS-latest, 20)	1m 39s
fable-python-build (macOS-latest, 3.10)	1m 47s
fable-npm-build (macOS-latest, latest)	1m 48s
fable-python-build (macOS-latest, 3.11)	1m 57s
fable-python-build (macOS-latest, 3.12)	1m 51s
	1h 26m 41s

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