feat: add workflow to test readme generation (#6359) #13816

Job	Run time
check-dependency-rules	9s
check-fail-ci	12s
check-markdown	14s
check-readme	3m 1s
check-workspace	21s
preflight / preflight	11s
preflight / ci-versions	1m 32s
fmt	1m 21s
check-rust-feature-propagation	2m 33s
check-toml-format	1m 24s
check-umbrella	2m 41s
test-rust-features	2m 31s
All quick checks passed	1s
	16m 11s

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