Add Helm chart for deploying web and API components

- Created complete Helm chart with deployments, services, and ingress
- Added support for both web frontend and API backend components
- Included autoscaling (HPA) for both components
- Added pod disruption budgets for high availability
- Configured security contexts and best practices
- Created helper templates and configuration management
- Added production and development value files
- Included comprehensive README with installation instructions

helm/api7ee/templates/NOTES.txt

@@ -0,0 +1,58 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.web.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "api7ee.fullname" . }}-web)
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.web.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "api7ee.fullname" . }}-web'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "api7ee.fullname" . }}-web --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.web.service.port }}
+{{- else if contains "ClusterIP" .Values.web.service.type }}
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward service/{{ include "api7ee.fullname" . }}-web 8080:{{ .Values.web.service.port }}
+{{- end }}
+
+2. Check the deployment status:
+  kubectl get deployments -n {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "api7ee.name" . }},app.kubernetes.io/instance={{ .Release.Name }}"
+
+3. View the pods:
+  kubectl get pods -n {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "api7ee.name" . }},app.kubernetes.io/instance={{ .Release.Name }}"
+
+4. Check the logs:
+  # For Web component:
+  kubectl logs -n {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "api7ee.name" . }},app.kubernetes.io/instance={{ .Release.Name }},app.kubernetes.io/component=web"
+
+  # For API component:
+  kubectl logs -n {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "api7ee.name" . }},app.kubernetes.io/instance={{ .Release.Name }},app.kubernetes.io/component=api"
+
+5. Scale the deployments:
+  # Scale Web component:
+  kubectl scale deployment {{ include "api7ee.fullname" . }}-web -n {{ .Release.Namespace }} --replicas=3
+
+  # Scale API component:
+  kubectl scale deployment {{ include "api7ee.fullname" . }}-api -n {{ .Release.Namespace }} --replicas=5
+
+{{- if .Values.web.autoscaling.enabled }}
+
+6. Web Horizontal Pod Autoscaler is enabled:
+  Min replicas: {{ .Values.web.autoscaling.minReplicas }}
+  Max replicas: {{ .Values.web.autoscaling.maxReplicas }}
+  Target CPU: {{ .Values.web.autoscaling.targetCPUUtilizationPercentage }}%
+  Target Memory: {{ .Values.web.autoscaling.targetMemoryUtilizationPercentage }}%
+{{- end }}
+
+{{- if .Values.api.autoscaling.enabled }}
+
+7. API Horizontal Pod Autoscaler is enabled:
+  Min replicas: {{ .Values.api.autoscaling.minReplicas }}
+  Max replicas: {{ .Values.api.autoscaling.maxReplicas }}
+  Target CPU: {{ .Values.api.autoscaling.targetCPUUtilizationPercentage }}%
+  Target Memory: {{ .Values.api.autoscaling.targetMemoryUtilizationPercentage }}%
+{{- end }}