feat(observability): 🗂️ organize dashboards into Grafana folders

Assigns folder field to all GrafanaDashboard CRs:
- EDP / Overview: platform-overview
- EDP / Applications: forgejo, argocd-operational, garm, argocd
- EDP / Operations: cronjob-monitoring, ingress-nginx, victoria-logs

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/argocd-operational.yaml

@@ -6,6 +6,7 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Applications"
   json: |
     {
       "annotations": {"list": []},

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/argocd.yaml

@@ -6,4 +6,5 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Applications"
   url: "https://raw.githubusercontent.com/argoproj/argo-cd/refs/heads/master/examples/dashboard.json"

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/cronjob-monitoring.yaml

@@ -6,6 +6,7 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Operations"
   json: |
     {
       "annotations": {"list": []},

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/forgejo.yaml

@@ -6,6 +6,7 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Applications"
   json: |
     {
       "annotations": {"list": []},

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/garm.yaml

@@ -6,6 +6,7 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Applications"
   json: |
     {
       "annotations": {"list": []},

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/ingress-nginx.yaml

@@ -6,4 +6,5 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Operations"
   url: "https://raw.githubusercontent.com/adinhodovic/ingress-nginx-mixin/refs/heads/main/dashboards_out/ingress-nginx-overview.json"

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/platform-overview.yaml

@@ -6,6 +6,7 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Overview"
   json: |
     {
       "annotations": {"list": []},

otc/observability.buildth.ing/stacks/observability/grafana-operator/manifests/victoria-logs.yaml

@@ -6,6 +6,7 @@ spec:
   instanceSelector:
     matchLabels:
       dashboards: "grafana"
+  folder: "EDP / Operations"
   grafanaCom:
     id: 22698
     revision: 1