Migrate `pallet-authorship` to umbrella crate #17547

Job	Run time
check-dependency-rules	10s
check-fail-ci	16s
check-markdown	16s
check-workspace	16s
check-readme	3m 9s
preflight / preflight	48s
preflight / ci-versions	1m 2s
check-rust-feature-propagation	1m 36s
check-toml-format	1m 14s
check-umbrella	2m 21s
fmt	1m 11s
test-rust-features	1m 40s
All quick checks passed	1s
	14m 0s

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