Add EIP-5334: EIP-721 User And Expires And Level Extension

[yan253319066]

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A critical exception has occurred:
Message: pr 5334 is already merged; quitting
(cc @alita-moore, @mryalamanchi)

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[yan253319066]

@lightclient, @axic, @SamWilsn, @Pandapip1

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[yan253319066]

Updated 5327 to 5334

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[MicahZoltu]

Reference implementation should only contain the minimum code possible to exemplify an implementation of this standard. It doesn't have to be complete or even compile out of the box and it shouldn't include an entire build system, tooling, nor any extraneous features. I recommend deleting everything in assets/eip-5334 except the ERC5334.sol file.

---

For test cases, this should be something that is portable to any environment a future reader may be using and not tightly coupled with a particular language/test tooling. Usually this means a JSON file or something that has function, inputs, expected_outputs, expected_exceptions or something. You may want additional columns for expected post-conditions as well.

The readme also shouldn't be included, nor should the .gitignore.

[yan253319066]

Thank you for your counsel.

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[yan253319066]

@lightclient, @axic, @SamWilsn, @Pandapip1
Thanks

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[yan253319066]

@lightclient, @axic, @SamWilsn, @Pandapip1

[0xanders]

suggest add setUserLevel() and userLevel() as an extension of EIP-4907

/// @notice Get the user level of an NFT
/// @dev The zero value indicates that there is no user
/// @param tokenId The NFT to get the user level for
/// @return The user level for this NFT
function userLevel(uint256 tokenId) external view returns(uint8);

/// @notice Set the user level of an NFT
/// @param level  User level of the NFT
function SetUserLevel(uint256 tokenId, uint8 level) external view returns(uint256);

[0xanders]

@lightclient, @SamWilsn, @Pandapip1, please compare this EIP with EIP-4907, there is a lot of the same content.

So I suggest change this EIP as an extension of EIP-4907

[Pandapip1]

Please make the required changes. They can be found in the files tab

[Pandapip1]

@yan253319066 - if you don't like any of these changes, please feel free to revert them by submitting a PR.

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