Migrate `pallet-authorship` to umbrella crate #16908

Job	Run time
check-dependency-rules	7s
check-fail-ci	9s
check-markdown	14s
check-readme	3m 39s
check-workspace	17s
preflight / preflight	1m 18s
preflight / ci-versions	57s
check-toml-format	1m 1s
check-rust-feature-propagation	1m 36s
check-umbrella	2m 13s
fmt	1m 6s
test-rust-features	1m 42s
All quick checks passed	1s
	14m 20s

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