ERC-7390 Vanilla Options for ERC-20 Tokens

DraftERCcreated 2022-09-02requires ERC-20, ERC-1155

An interface for creating, managing, and executing simple time-limited call/put (vanilla) options.

Authors: Ewan Humbert (@Xeway), Lassi Maksimainen (@mlalma)

ERC-165 interface ids

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

IERC7390 0xa5f91bd9

`0xd6febde8`	`buy(uint256,uint256)`
`0x57d682c4`	`cancel(uint256,address)`
`0x4b849905`	`create((uint8,address,uint256,address,uint256,address,uint256,uint256,uint256,address[]))`
`0xa86265bb`	`exercise(uint256,uint256)`
`0x248b761e`	`issuance(uint256)`	view
`0xbe74c737`	`retrieveExpiredTokens(uint256,address)`
`0x86d1743f`	`updateAllowed(uint256,address[])`
`0xdb191d5d`	`updatePremium(uint256,uint256)`

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

`0x06acbfb32bcf8383f3b0a768b70ac9ec234ea0f2d3b9c77fa6a2de69b919aad1`	`Created(uint256)`
`0xa2a8034590a15fe810e9813d736096c0a03b3236cecb34b5b9f687ed67a6a624`	`Bought(uint256,uint256,address)`
`0x0328c770810250ca303b85a612c9103929d1701abdf1dd1114607d139edfbed6`	`Exercised(uint256,uint256)`
`0xf80dbaea4785589e52984ca36a31de106adc77759539a5c7d92883bf49692fe9`	`Expired(uint256)`
`0x829a8683c544ad289ce92d3ce06e9ebad69b18a6916e60ec766c2c217461d8e9`	`Canceled(uint256)`
`0x09cd73f1e5a72a9aa3f9a3be157754c12c33bb354df859c62eb815166deb01ce`	`PremiumUpdated(uint256,uint256)`
`0xbb59c0a2dd285e2ba645e012aa60ff5229253735b31169929c7b6b19ed8f6368`	`AllowedUpdated(uint256,address[])`

Proposals this one names in its requires field.