pallet-xcm: add support to authorize aliases #18378

Job	Run time
check-dependency-rules	9s
check-markdown	12s
check-workspace	28s
check-fail-ci	22s
check-readme	3m 3s
preflight / preflight	43s
preflight / ci-versions	59s
test-rust-features	2m 3s
fmt	1m 24s
check-rust-feature-propagation	2m 9s
check-toml-format	1m 26s
check-umbrella	2m 9s
All quick checks passed	1s
	15m 8s

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