[DO-1600] Move mermaid to new ns (!34)

[DO-1600]

Co-authored-by: denis.patrakeev <denis.patrakeev@avroid.tech>
Reviewed-on: https://git.avroid.tech/K8s/k8s-configs/pulls/34

clusters/k8s-avroid-office.prod.local/namespaces/prod/mermaid/kustomize/kustomization.yaml

@@ -0,0 +1,7 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - mermaid-deployment.yaml
+  - mermaid-service.yaml
+  - mermaid-ingress.yaml