feat(json-abi): deserialize more ContractObjects (#348) #1058

Job	Run time
docs	27s
clippy	44s
feature-checks	3m 40s
fmt	14s
miri --no-default-features	3m 52s
test stable --no-default-features	1m 13s
miri	2m 43s
test stable	1m 8s
miri --all-features	4m 4s
test stable --all-features	1m 25s
test beta --no-default-features	1m 35s
wasm	39s
test beta	1m 11s
test beta --all-features	1m 23s
test nightly --no-default-features	1m 26s
test nightly	1m 20s
test nightly --all-features	1m 43s
test 1.65 --no-default-features	44s
test 1.65	34s
	30m 5s

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