Support more convenient JSON format in CLI

[cthulhu-rider]

In current implementation CLI app supports NeoFS (Protocol Buffers) JSON format only. This format is sometimes not convenient. For example, we need to form container identifier field as

"cid": {
  "value":"Uv38ByGCZU8WP18PmmIdcpVmx00QA3xNe7sEB9Hixkk=" # base64-encoded ID
}

Protocol JSON format can't be changed (it's an axiom), but we can provide more convenient format in CLI local layer. For example, identifiers can be presented as protocol strings:

"cid": "6ay4GfhR9RgN28d5ufg63toPetkYHGcpcW7G3b7QWSek" # base8-encoded ID according to NeoFS API protocol

[roman-khimov]

This especially sucks in EACLs.