Add Zoekt runbooks
This change introduces Zoekt runbook, similar to the one we have for Elasticsearch
Rendered version: https://gitlab.com/gitlab-com/runbooks/-/blob/390004-zoekt-runbooks/docs/zoekt/README.md
Edited by Dmitry Gruzd
This change introduces Zoekt runbook, similar to the one we have for Elasticsearch
Rendered version: https://gitlab.com/gitlab-com/runbooks/-/blob/390004-zoekt-runbooks/docs/zoekt/README.md