Implement wrapper over NeoFS ID contact's client which allows to which
allows you to conveniently interact with the contract. Implement
`AccountKeys` method for getting a list of keys by account ID.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement NeoFS ID contact's client which is responsible for collecting call
arguments and parsing stack items. Initially only key listing method is
supported.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>