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/README.md

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+# API7 Enterprise Edition Helm Chart
+
+This Helm chart deploys the API7 Enterprise Edition demo application, consisting of a Web frontend and API backend service.
+
+## Prerequisites
+
+- Kubernetes 1.19+
+- Helm 3.8.0+
+- PV provisioner support in the underlying infrastructure (optional)
+- Ingress controller (e.g., NGINX Ingress Controller)
+
+## Installation
+
+### Add the Helm repository (if published)
+
+```bash
+helm repo add api7ee https://charts.commandware.com
+helm repo update
+```
+
+### Install the chart
+
+```bash
+# Install with default values
+helm install my-api7ee ./helm/api7ee
+
+# Install in a specific namespace
+helm install my-api7ee ./helm/api7ee --namespace api7ee --create-namespace
+
+# Install with custom values file
+helm install my-api7ee ./helm/api7ee -f custom-values.yaml
+```
+
+## Configuration
+
+### Key Configuration Options
+
+| Parameter | Description | Default |
+|-----------|-------------|---------|
+| `web.enabled` | Enable Web component | `true` |
+| `web.replicaCount` | Number of Web replicas | `2` |
+| `web.image.repository` | Web image repository | `api7ee/web` |
+| `web.image.tag` | Web image tag | `main` |
+| `web.service.port` | Web service port | `8000` |
+| `api.enabled` | Enable API component | `true` |
+| `api.replicaCount` | Number of API replicas | `3` |
+| `api.image.repository` | API image repository | `api7ee/api` |
+| `api.image.tag` | API image tag | `main` |
+| `api.service.port` | API service port | `8080` |
+| `ingress.enabled` | Enable ingress | `true` |
+| `ingress.hosts[0].host` | Ingress hostname | `demo.commandware.it` |
+
+### Custom Values Examples
+
+#### Using a private registry:
+
+```yaml
+global:
+  imageRegistry: my-registry.example.com
+  imagePullSecrets:
+    - name: my-registry-secret
+```
+
+#### Enabling autoscaling:
+
+```yaml
+web:
+  autoscaling:
+    enabled: true
+    minReplicas: 2
+    maxReplicas: 10
+    targetCPUUtilizationPercentage: 70
+```
+
+#### Custom resource limits:
+
+```yaml
+api:
+  resources:
+    limits:
+      cpu: 2000m
+      memory: 2Gi
+    requests:
+      cpu: 1000m
+      memory: 1Gi
+```
+
+## Upgrading
+
+```bash
+# Upgrade to a new version
+helm upgrade my-api7ee ./helm/api7ee
+
+# Upgrade with new values
+helm upgrade my-api7ee ./helm/api7ee --set web.replicaCount=3
+```
+
+## Uninstallation
+
+```bash
+# Uninstall the release
+helm uninstall my-api7ee
+
+# Uninstall from a specific namespace
+helm uninstall my-api7ee --namespace api7ee
+```
+
+## Monitoring
+
+If metrics are enabled, the services expose Prometheus-compatible metrics:
+
+```yaml
+metrics:
+  enabled: true
+  serviceMonitor:
+    enabled: true
+    interval: 30s
+```
+
+## Troubleshooting
+
+### Check deployment status:
+```bash
+kubectl get deployments -l app.kubernetes.io/instance=my-api7ee
+```
+
+### View logs:
+```bash
+# Web component logs
+kubectl logs -l app.kubernetes.io/instance=my-api7ee,app.kubernetes.io/component=web
+
+# API component logs
+kubectl logs -l app.kubernetes.io/instance=my-api7ee,app.kubernetes.io/component=api
+```
+
+### Check HPA status:
+```bash
+kubectl get hpa -l app.kubernetes.io/instance=my-api7ee
+```
+
+## Security Considerations
+
+- Pod Security Context is configured to run as non-root user (UID 1000)
+- Security Context drops all capabilities and prevents privilege escalation
+- Read-only root filesystem is enabled
+- Network policies can be enabled to restrict traffic
+
+## Support
+
+For issues and questions, please contact support@commandware.com or visit https://git.commandware.com/demos/api7-demo