Add ERC: Intrinsic RevShare Token

[socathie]

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[eip-review-bot]

File ERCS/erc-7641.md

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

[github-actions]

The commit 72f4d1c (as a parent of 1274cfd) contains errors.
Please inspect the Run Summary for details.