Add ERC-7571: Shadow events

[emilyhsia]

Discussion thread: https://ethereum-magicians.org/t/erc-7571-shadow-events/17134

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[github-actions]

The commit b99d107 (as a parent of 8d1bb4d) contains errors.
Please inspect the Run Summary for details.

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There has been no activity on this pull request for 2 weeks. It will be closed after 3 months of inactivity. If you would like to move this PR forward, please respond to any outstanding feedback or add a comment indicating that you have addressed all required feedback and are ready for a review.

[SamWilsn]

Is this ready for review? It's still marked as a draft pull request.

[github-actions]

There has been no activity on this pull request for 2 weeks. It will be closed after 3 months of inactivity. If you would like to move this PR forward, please respond to any outstanding feedback or add a comment indicating that you have addressed all required feedback and are ready for a review.

[github-actions]

This pull request was closed due to inactivity. If you are still pursuing it, feel free to reopen it and respond to any feedback or request a review in a comment.