feat(sol-macro): add docs to generated contract modules #1072

Job	Run time
feature-checks	4m 30s
docs	40s
clippy	1m 3s
fmt	21s
miri --no-default-features	2m 48s
test stable --no-default-features	1m 35s
miri	3m 1s
wasm	45s
test stable	1m 36s
test stable --all-features	1m 53s
miri --all-features	3m 19s
test beta --no-default-features	1m 48s
test beta	1m 38s
test beta --all-features	2m 10s
test nightly --no-default-features	1m 24s
test nightly	1m 23s
test nightly --all-features	1m 50s
test 1.65 --no-default-features	1m 12s
test 1.65	48s
	33m 44s

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