* Make `ListMorphRuleChains` methods use `commonclient.ReadIteratorItems`.
* Introduce `ContractStorageActor` interface.
* Iterators are used because listing by `ListChainsByPrefix` may cause
stack overflow from neo-go side (len(items) > 1024).
Signed-off-by: Airat Arifullin <aarifullin@yadro.com>
* Update frostfs-contract package version in go.mod.
* Extend MorphRuleChainStorage interface with ListTargetsIterator and
introduce its implementation.
* Check targets in inmemory implementation unit-tests.
Signed-off-by: Airat Arifullin <aarifullin@yadro.com>
* Make changing state methods like AddMorphRuleChain,
RemoveMorphRuleChain return transaction hash and VUB.
Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>
