Add options for users to be able to integrate royalties on their ERC721 and ERC1155 contracts. This is a suggested set of changes:

• Include it on the options after selecting ERC721 or ERC1155.
  
  Populating those fields would inherit from the tokenRoyalty contract and call the setDefaultRoyalty from the constructor.

• Include this parts on the code:

  • An import for the new module: import "@openzeppelin/contracts/token/tokenERC/extensions/tokenERCRoyalty.sol";
  • An inheritance: contract MyToken is ERC721, AccessControl { We'll use Access control to handle the roles of who can set royalties.
  • This calls to the royalties functions:

    function setTokenRoyalty(
        uint256 tokenId,
        address recipient,
        uint96 fraction
    ) public onlyRole(ROYALTY_SETTER_ROLE) {
        _setTokenRoyalty(tokenId, recipient, fraction);
    }

    function setDefaultRoyalty(address recipient, uint96 fraction) public onlyRole(ROYALTY_SETTER_ROLE) {
        _setDefaultRoyalty(recipient, fraction);
    }

- [ ] This constructor: 

bytes32 public constant ROYALTY_SETTER_ROLE= keccak256("ROYALTY_SETTER_ROLE");
constructor() ERC721("MyToken", "MTK") {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _grantRole(ROYALTY_SETTER_ROLE, msg.sender);
    }

Take into consideration for the ERC1155, if the user specifies royalties and select ERC1155Supply do not import it btwice into the code, since the royalties contract inherits from this module.