Proposal of canonical ledger state format

This proposal defines the Simple Canonical Ledger State (SCLS),
a stable, versioned, and verifiable file format for representing
the Cardano ledger state. It specifies a segmented binary container
with deterministic CBOR encodings, per-chunk commitments, and
a manifest that enables identical snapshots across implementations,
supports external tools (e.g., Mithril), and future-proofs distribution
and verification of state.

> Co-Authored-By: Nicholas Clarke <[email protected]>
> Co-Authored-By: João Santos Reis <[email protected]>

Author: qnikst