EPIC: State Snapshot creation

[Nana-EC]

Problem

As part of potential Reconnect, DR and state proof flows the BN needs to be able to generate a snapshot of state at given times

Solution

Add logic to create a state snapshot

Estimation considerations

Needed for Reconnect and DR. Could find more uses in State proofs, Start a new MN from 1 day granularity (rather than starting at Block 0)

1. Every 15 mins. (Take ~4 mins today in CN) Whole copy of the live state database.
2. Discard older copies EOD.
3. Save EOD archived copy in a more efficient way (may be Parquet).
4. CN could still continue to producing them (locally)

Alternatives

No response