switch AsgTools from IJobOptionsSvc to IOptionsSvc
This should address ATLASG-1551, though I didn't perform a complete migration. Doing private sub-sub-tools with the AnaToolHandle in Athena doesn't seem to work correctly anymore. Given that AnaToolHandle is no longer the recommended way of creating sub-tools anymore I'd rather just see if this breaks anything. If it does I'll decide whether to try and fix the AnaToolHandle implementation, or migrate the users to AsgToolConfig instead.