ERC-5501 Rental & Delegation NFT - EIP-721 Extension

StagnantERCcreated 2022-08-18requires ERC-165, ERC-721, ERC-4400, ERC-4907

Adds a conditional time-limited user role to EIP-721. This role can be delegated or borrowed.

Authors: Jan Smrža (@smrza), David Rábel (@rabeles11), Tomáš Janča, Jan Bureš (@JohnyX89), DOBBYLABS (@DOBBYLABS)

ERC-165 interface ids

Computed here as the XOR of the selectors each interface defines.

IERC5501 0xf808ec37

`0xcbd00851`	`setUser(uint256,address,uint64,bool)`
`0x8fc88c48`	`userExpires(uint256)`	view
`0x7ee19964`	`userIsBorrowed(uint256)`	view
`0xc2f1f14a`	`userOf(uint256)`	view

`0x095ea7b3`	`approve(address,uint256)`	ERC-721
`0x70a08231`	`balanceOf(address)`	ERC-721
`0x081812fc`	`getApproved(uint256)`	ERC-721
`0xe985e9c5`	`isApprovedForAll(address,address)`	ERC-721
`0x6352211e`	`ownerOf(uint256)`	ERC-721
`0xb88d4fde`	`safeTransferFrom(address,address,uint256,bytes)`	ERC-721
`0x42842e0e`	`safeTransferFrom(address,address,uint256)`	ERC-721
`0xa22cb465`	`setApprovalForAll(address,bool)`	ERC-721
`0x01ffc9a7`	`supportsInterface(bytes4)`	ERC-165
`0x23b872dd`	`transferFrom(address,address,uint256)`	ERC-721

Interfaces the spec defines alongside the core one, which an implementation may or may not carry.

0x0cb22289 userBalanceOf(address)

0x1d350ef8 tokenOfUserByIndex(address,uint256)

Topic0 is the keccak256 hash of the signature, which is what a log filter matches on.

`0x71e41666027a2b4557ad6dfdb283b947f4a9acbb2757169345d52ed8fc3a170c`	`UpdateUser(uint256,address,uint64,bool)`
`0x4bd363ec03602055b4800dc76a2b1928b2569c50fed8fdc000fb48ae63847c8a`	`AgreeToTerminateBorrow(uint256,address,bool)`
`0x18cc29bf7faabb7cdac8395a8cc7314aed56223fbcc29a21559abb214768da53`	`ResetTerminationAgreements(uint256)`
`0xcdb5bd4d8075db7c766290ddbae2d18cb49abc6957393755817bdab38d30d0e7`	`TerminateBorrow(uint256,address,address,address)`