Chained metadata, v1

[roman-khimov]

Is your epic related to a problem? Please describe.

I'm always frustrated when we don't have any real solution for the metadata problem. It's naturally sharded per-container, but solving sharding problems will take a lot of time, so for v1 we can just have it centralized (which naturally limits per-network ops/s). It's processed off-chain, but ordered on-chain.

Describe the solution you'd like

• node/objects: Distribute objects in container via replication protocol  #2802
• Signature response for initial replication neofs-api#299
• Implement signature extension for replications  neofs-sdk-go#589
• Exchange meta signatures during initial replication #2876
• Extend container contract with node lists neofs-contract#412
• Verification function for container-level thing neofs-contract#413
• Container consistency policy neofs-api#300
• Per-container event feed neofs-contract#414
• Push meta into on-chain contracts #2877
• Check NeoFS chains compatibility with limited MaxTraceableBlocks neo-go#3493
• Implement experimental Depends attribute neo-go#3494
• Implement experimental fetching of blocks from NeoFS container neo-go#3496

To be continued.

• Add split object meta into signed data #2935