LeaderElection NewFromKubeconfig support "Functional Options" pattern

[ivankatliarchuk]

Currently if we would like to have an automated cleanup of leases, the only way is to

The code is here https://github.com/kubernetes/client-go/blob/ce24f3c462e8e98af9d79453327a77ffdc4a8b0e/tools/leaderelection/resourcelock/interface.go#L104C2-L111C3

The proposed functionality is to add something like below, this should not break current clients, or add one more

pseudo code

func NewFromKubeconfig(...., opts ...LeaseLockOptions) {
}
// or
func NewFromKubeconfigOpts(...., opts ...LeaseLockOptions) {
}

type LeaseLockOption func(d *LeaseLock) error

func ObjectMeta(m ObjectMeta) LeaseLockOption {
	return func(l *LeaseLock) error {
		l.LeaseMeta = m
		return nil
	}
} 

func Labels(m Labels) LeaseLockOption {
	return func(l *LeaseLock) error {
		l.Labels = m
		return nil
	}
}

// If ALL objects in the list have been deleted, this object will be garbage collected
func OwnerReferences(m OwnerReferences) LeaseLockOption {
	return func(l *LeaseLock) error {
		l.OwnerReferences = m
		return nil
	}
}
..

I'm happy to submit a pull request if it make sense.
A bit more explanation https://golang.cafe/blog/golang-functional-options-pattern.html