feat(trivy): Enhance Trivy report generation and metrics handling

- Updated `generate_report.sh` to include additional scanners and output paths.
- Enhanced `send_report.py` with new data classes for misconfigurations and vulnerabilities.
- Improved parsing logic for Trivy output, supporting both Kubernetes and image scans.
- Added Prometheus metrics generation for various scan results, including misconfigurations and vulnerabilities.
- Introduced unit tests for parsing Trivy output and generating Prometheus metrics.
- Modified Terraform variables for SMTP port type and added Pushgateway URL variable.

terraform/modules/utils/prometheus/resources/prometheus.yml

@@ -36,6 +36,10 @@ scrape_configs:
         regex: '^/system\.slice/(.+)\.service$'
         target_label: systemd_service_name
         replacement: "${1}"
+  - job_name: pushgateway
+    honor_labels: true
+    static_configs:
+      - targets: ["pushgateway.prometheus.svc.cluster.local:9091"]
 alerting:
   alertmanagers:
     - static_configs: