Provide Helm charts for k8s deployment

[Dogacel]

I think the deployment of Central Dogma is not straightforward because it contains stateful data. Most popular open source projects provide Helm charts to demonstrate how their applications should be deployed on a modern HA system (k8s).

I think it would be nice to see a similar deployment configuration for central dogma as well.

[minwoox]

/cc @yuinacor who is using the Helm charts in his company and considering the contribution.

[yuinacor]

It look so deeply coupled with our internal usages.

I'll try to cleaning up that, but it can't be fast... Sorry for this news.