Add security scanner

Author: pjonsson

.github/workflows/scan.yaml

@@ -0,0 +1,40 @@
+name: Scan
+
+on:
+  push:
+    branches:
+    - develop
+    - ci-security-scan
+  workflow_dispatch:
+  pull_request:
+
+# When a PR is updated, cancel the jobs from the previous version. Merges
+# do not define head_ref, so use run_id to never cancel those jobs.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  cve-scanner:
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Run vulnerability scanner
+      uses: aquasecurity/trivy-action@master
+      with:
+        scan-type: 'fs'
+        ignore-unfixed: true
+        format: 'sarif'
+        output: 'trivy-results.sarif'
+        severity: 'HIGH,CRITICAL'
+
+    - name: Upload Trivy scan results to GitHub Security tab
+      uses: github/codeql-action/upload-sarif@v3
+      with:
+        sarif_file: 'trivy-results.sarif'