ON-670: Refactor ERC-7432

[ernanirst]

This PR aims to simplify ERC-7432 by removing two requirements:

• It's no longer required to support non-unique roles.
• it's no longer required to support invalidating all roles when an NFT is transferred.

Changes worth mentioning:

• When the NFT is required to be deposited in the roles registry contract, the grantRole function is responsible for depositing, and the optional interface IERC7432VaultExtension is responsible for withdrawing.
• grantee was removed from most function signatures as we no longer need to support non-unique roles.
• grantor was removed from most function signatures as we no longer need to support invalidating roles when NFTs are transferred.

Other grammatical changes:

• The bytes32 role identifier was renamed from role to roleId.
• The RoleAssignment struct was renamed to Role