refactor: elcontracts/writer interface to use request-response pattern

[damiramirez]

Currently, the SDK interfaces are tightly coupled with the underlying contract interfaces. This results in breaking changes whenever contract interfaces are updated, even if the core functionality remains the same. To improve flexibility and maintainability, we should refactor the SDK to adopt a request-response pattern.

Proposed Solution

• Introduce request structs to encapsulate input parameters.
• Continue returning the Ethereum Receipt (from go-ethereum) instead of creating a custom response struct.

func (w *ChainWriter) Bar(
	ctx context.Context,
	request BarRequest,
	txOptions *TxOptions,
) (*types.Receipt, error) {
       ...
}

type TxOptions struct {
    Options *bind.TransactOpts
}

type BarRequest struct {
    WaitForReceipt bool
    // ... other fields
}

Updated methods:

• RegisterAsOperator - refactor: elcontracts/writer new interface for selected methods #507
• UpdateOperatorDetails - refactor: elcontracts/writer new interface for selected methods #507
• UpdateMetadataURI - refactor: elcontracts/writer new interface for selected methods #507
• DepositERC20IntoStrategy - refactor: elcontracts/writer new interface for selected methods #507
• SetClaimerFor - refactor: elcontracts/writer new interface for selected methods #507
• ProcessClaim - refactor: elcontracts/writer new interface for selected methods #507
• SetOperatorAVSSplit - refactor: elcontracts/writer new interface for selected methods #507
• SetOperatorPISplit - refactor: elcontracts/writer new interface for selected methods #507
• ProcessClaims - refactor: elcontracts/writer new interface for selected methods #507
• ForceDeregisterFromOperatorSets
• ModifyAllocations
• SetAllocationDelay
• DeregisterFromOperatorSets
• RegisterForOperatorSets
• RemovePermission
• NewRemovePermissionTx
• NewSetPermissionTx
• SetPermission
• NewAcceptAdminTx
• AcceptAdmin
• NewAddPendingAdminTx
• AddPendingAdmin
• NewRemoveAdminTx
• RemoveAdmin
• NewRemovePendingAdminTx
• RemovePendingAdmin