Dogfooding for v2

[EronWright]

Let's take some time to simply use the product to find and fix bugs.

Here's some features to try out:

1. Stack updates (configuration changes, new commits, periodic resync)
2. the Program API, Flux API, and git sources
3. graceful shutdown (of workspaces and of the operator)
4. handling of failed updates, refreshes, deletes
5. working with credentials (Pulumi access tokens, Git auth)and using Pulumi OIDC
6. using alternative state backends
7. consuming the operator metrics and documenting the migration steps to use metrics
8. the provided examples
9. using the Kubernetes provider in a workspace pod (incl. RBAC, kubeconfig)
10. customization using workspace/pod template
11. using workspace service accounts
12. having multiple stacks in a namespace and across namespaces
13. using the language-specific images, and building and using custom docker images

[cleverguy25]

Added to epic #586

[blampe]

Let's try to do in-person in Seattle.