Rust

Add docs for `dmo-stf`. #3333

Job	Run time
test	4m 37s
coverage	4m 53s
cargo-doc-artifact	2m 26s
check	6m 6s
check-demo-rollup-table-of-contents	18s
check-licenses	41s
validate-packages-to-publish-yml	45s
deploy-github-pages	0s
check-demo-rollup-bash-commands	11m 37s
features	24m 45s
	56m 8s

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