Support a true GitOps workflow

**Is your feature request related to a problem? Please describe.**
As a user, I'd like to be able to utilize true pull-based GitOps workflows for Day 1/2+ operations after getting started. The existing push-based model does not scale as the number of applications, teams, and clusters grow.

**Mention what platform you want to support the new feature**
Has implications possibly across all of: az-extension, oss draft, and vscode.

**Describe the solution you'd like**
1. `draft create` provisions a GitOps-friendly/planned repo structure and optionally wraps the structure in ArgoCD application(Set).
2. `draft setup-gh` or likely alternative command bootstraps the cluster with ArgoCD agent sync'ed to the repo specified
3. `draft generate-workflow` still sets up the pipeline to build the container image, but it does not authenticate/`kubectl apply ` push down to the cluster. The ArgoCD agent in the previous step will automatically install the newly created container image after it is merged into the proper git directory as specified previously.

**Describe alternatives you've considered**
https://github.com/gitops-bridge-dev/gitops-bridge-argocd-control-plane-template
https://github.com/argoproj-labs/argocd-autopilot
https://github.com/alexellis/arkade?tab=readme-ov-file#catalog-of-clis -- ArgoCD