Instance-wide services and/or variables
Description
When creating the UX Demo, it became obvious that I didn't want to enter in credentials to the container scheduler on every project, but instead we should have some way of configuring an entire single-tenant installation with shared credentials for the whole company. In this case, they could be in the form of secure variables since I'll be using the for CI/CD, but doing this as an instance-wide "service" installation might be a better approach that solves other problems too.