Snowbridge - Copy Rococo integration tests to Westend #17567

Job	Run time
check-dependency-rules	6s
check-fail-ci	12s
check-markdown	13s
check-readme	3m 14s
check-workspace	15s
preflight / preflight	1m 18s
preflight / ci-versions	55s
fmt	1m 7s
check-rust-feature-propagation	2m 0s
test-rust-features	1m 58s
check-toml-format	1m 1s
check-umbrella	2m 22s
All quick checks passed	1s
	14m 42s

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