update format of ingress to up-to-date K8s schema (version 1.22), fix blank page

[Dmitriusan]

Error: Unable to build Kubernetes objects from release manifest: Resource mapping not found for name: "irw-teamcity-release" namespace: "" from "".
No matches for kind "Ingress" in version "networking.k8s.io/v1beta1".
Ensure CRDs (Custom Resource Definitions) are installed first.

https://kubernetes.io/docs/reference/using-api/deprecation-guide/#ingress-v122
https://github.com/codaglobal/teamcity_helm/blob/main/templates/ingress.yaml#L5C13-L5C38

I've updated format of Ingress, and also fixes issues with a blank page after deployment (web resources not being loaded)

[audioboxer217]

It's been some time since I looked at this Helm Chart, but what I see here looks good to me.