Add ERC: App Keys for Fully Embedded Accounts

[danfinlay]

As we build infrastructure that facilitates embedded wallets, sites have a new opportunity to manage keys to manage permissions they receive (like via ERC-7715).

Alternatively, the site may want to defer key backup to the wallet, while still wanting the benefits of being able to sign on their own behalves.

This is one extremely minimal initial approach to granting sites key material that is deterministically generated to them. It probably needs some refinement in its algorithm, but can be treated as a general outline of an approach for consideration even in this initial draft form.

[eip-review-bot]

File ERCS/erc-7763.md

Requires 1 more reviewers from @axic, @g11tech, @samwilsn, @xinbenlv

[danfinlay]

Sorry, had some files from other branches. Cleaning up.

[github-actions[bot]]

The commit 85cd73aedfa4ea0a996127ef2a0b5e223ca27f71 (as a parent of 4229bc8753b6e357f8bfcfe2346b079d8184ac95) contains errors. Please inspect the Run Summary for details.

[github-actions[bot]]

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