feat: add harmonic-wordpress dev environment on Legion

- Add harmonic-wordpress namespace
- WordPress + MySQL deployment with PVCs and ExternalSecrets
- Ingress for dev.harmonic-framework.com via Traefik + cert-manager
- Argo CD Application watching k8s/harmonic-wordpress/
- Add public Gitea repo credential for git.neuralplatform.ai

servers/legion/apps/harmonic-wordpress.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: harmonic-wordpress
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://git.neuralplatform.ai/will/infrastructure.git
+    targetRevision: main
+    path: servers/legion/k8s/harmonic-wordpress
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: harmonic-wordpress
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true