Helm Chart or ARC support for Cloud-runner

**Context**

Reading through your k8s deploy of cloud-runner, it looks like you tune it primarily for a cluster on AWS (whether EC2 or EKS), with an exposed api endpoint. This may be problematic for more security-conscious cluster administrators.

**Suggested solution**

1. Support ARC and self-hosted runners.
2. Create a helm chart to deploy cloud-runner to a k8s environment, with a values file to ingest and use tokens and configurations.

**Considered alternatives**

An installable version of cloud-runner packaged into a series of CMD calls that can be tied into a self-hosted github-runner.

**Additional details**

I am using an internal ARC self-hosted runner for my builds, game-ci unity-builder fails with an error code 137 (resource issues). My runner `resources:` is configured at 4CPU's, 4GB RAM, and an open volume on a 16TB array for storage.
There should be no resource issue, however the way ARC is set up, this may be by design.