Request to add gardener/etcd-druid helm chart.

Would it be possible to add the etcd-druid operator to the charts repository?
[https://github.com/gardener/etcd-druid/tree/master/charts](https://github.com/gardener/etcd-druid/tree/master/charts)

Something like this:

```yaml
  - name: "etcd-druid"
    version: "0.1.0"
    repo: "gardener/etcd-druid"
    charts:
      - "charts/etcd-druide"
```