Improved ArgoCD organization with Projects, Easier Prometheus resource finding, and Home Assistant

BREAKING CHANGES:

• N/A

Improvements:

• FIX: Moved ArgoCD Projects application from a sub-directory under Applications to its own application named Projects
  • Projects allow for grouping applications, added security, restrict source repos and namespaces
  • ArgoCD WebUI allows apps displayed by filtering by Projects
• FIX: Removed Ansible Notify reference on include_task to restart K3s service (not supported)
• NEW: Kube Prometheus Stack no longer requires a release label to find resources in other namespaces
  • Kube Prometheus Stack will now default to finding resources across namespaces, no labels needed.

README.md / Document Updates:

• Updated ArgoCD docs to show separated Projects application
• NEW: Added MQTT Zero Publishing Rate alert example
• NEW: Added Home Assistant configuration docs
  • Added hints on data migration and HACS configuration

Changes to _extra_apps:

• The k8s-at-home repository has been archived switched to read-only mode and will no longer provide updates
  • Switched to hosting self-copy of manifests for future updates/changes
  • All references to this repository changed to self-copy of it
• Removed Prometheus release labels not needed from resources and cleaned up Kustomizations to not try to apply them
• FIX: Custom-Alerts - MQTT Zero Publishing Rate alert to use rate expression (0 messages for 1 min)
• FIX: zigbee2mqtt ArgoCD / Helm version, added startup probe to allow time for container to start responding
  • This resolved unnecessary repetitive container restarts
• NEW: Added Home Assistant with an ArgoCD / Helm implementation
  • Statefulset, PVC storage, Traefik Ingress, CodeServer sidecar with Traefik Authentication for YAML file editing & terminal access