Rust

Add builders and docs for fluent-sdk #239

Job	Run time
test	54s
build (x86_64-unknown-linux-gnu, ubuntu-latest)	3s
build (x86_64-unknown-linux-musl, ubuntu-latest)	4s
build (x86_64-pc-windows-msvc, windows-latest)	3s
build (x86_64-apple-darwin, macos-latest)	4s
deploy	-1s
	1m 7s

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