Set/unset special roles for a fungible ESDT

In the realm of blockchain and cryptocurrency management, the manager of an ESDT (eStandard Digital Token) plays a crucial role in managing token permissions. Specifically, the manager has the authority to assign or remove special roles to different addresses, enhancing the token's operational flexibility and security. This capability is crucial for maintaining control and customization of token functionalities within the MultiversX network. However, it's important to note that the ability to set and unset these special roles is contingent upon the canAddSpecialRoles property being enabled. This feature ensures that only authorized managers can modify roles, providing an additional layer of security and governance to the token management process.