Refactoring in progress

go.mod

go.sum

gosdn.puml

nucleus/cli-handling.go

nucleus/controller.go

nucleus/device.go

nucleus/interfaces/clientConfig.go

nucleus/interfaces/interfaces.go

nucleus/nucleus-core.go

nucleus/principalNetworkDomain.go

nucleus/sbi/openConfig.go

nucleus/transport/gnmi.go

nucleus/transport/restconf.go

sbi/restconf/client/ciena/client.go

sbi/sbi-general.go