Add ERC: Cross-chain Storage Router Protocol

[sshmatrix]

The following proposal is a superior version of EIP-5559: Cross Chain Write Deferral Protocol, aka CCIP-Write, replacing Ethereum L1 storage with L2 chains and cryptographically secure databases with an aim to cut gas costs and further privacy while retaining the secure aspects of on-chain storage. Methods in this document specifically target security and cost-effectiveness of write deferrals in context of databases. The cross-chain data written with these methods can be retrieved by generic EIP-3668-compliant contracts completing the cross-chain data life cycle.

[eip-review-bot]

✅ All reviewers have approved.

[github-actions[bot]]

The commit ac5889c5f98bdab9b1c1552155028c18a367d63c (as a parent of 2bdf9896fdba49d9bdf34c76f17df238fd66fff8) contains errors. Please inspect the Run Summary for details.

[sshmatrix]

Hi @SamWilsn,

SVGs are included and your comments have been merged. Thanks for the review! Please let us know if you spot any more corrections.

[sshmatrix]

Apply (or don't) my previous suggestion at your leisure.

Noting this down; will add to a future PR (when/if one comes along)