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/apps/grafana/variables.tf

@@ -20,3 +20,9 @@ variable "persistent_folder" {
   description = "The path to the persistent folder"
   type        = string
 }
+
+variable "prometheus_url" {
+  description = "Prometheus service URL used by Grafana datasource provisioning"
+  type        = string
+  default     = "http://prometheus.prometheus.svc.cluster.local:9090"
+}