feat(dashboards): add global dashboards for Plutono and Perses ✨ (#29)

Signed-off-by: Akshay Iyyadurai Balasundaram <akshay.iyyadurai.balasundaram@sap.com>

Author: ibakshay

README.md

@@ -26,9 +26,13 @@ cloud-storage-operations
               ├── alerts/                   Prometheus alerts for kubernetes.
               │
               ├── dashboards/               Plutono dashboards for visualizing key metrics.
+              |
+              ├── dashboards-global/        Plutono dashboards for visualizing global metrics.
               │
               ├── perses-dashboards/        Perses dashboards for visualizing key metrics.
               │
+              ├── perses-dashboards-global/ Perses dashboards for visualizing global metrics.
+              │
               ├── playbooks/                Step-by-step instructions for troubleshooting.        
               │
               ├── Chart.yaml                Helm chart manifest.