add scorecard workflow

Author: sthulb

.github/workflows/security-scorecard.yml

@@ -0,0 +1,48 @@
+on:
+  branch_protection_rule:
+  schedule:
+    - cron: "0 9 * * *"
+  push:
+    branches: [main]
+  workflow_dispatch: {}
+
+name: OpenSSF Scorecard
+run-name: OpenSSF Scorecard
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    environment: Security
+    permissions:
+      security-events: write  
+      id-token: write
+
+    steps:
+      - name: "Checkout code"
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@62b2cac7ed8198b15735ed49ab1e5cf35480ba46 # v2.4.0
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true 
+          repo_token: ${{ secrets.SCORECARD_TOKEN }}
+
+      - name: "Upload results"
+        uses: actions/upload-artifact@6f51ac03b9356f520e9adb1b1b7802705f340c2b # v4.5.0
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      # Upload the results to GitHub's code scanning dashboard.
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@df409f7d9260372bd5f19e5b04e83cb3c43714ae # v3.27.9
+        with:
+          sarif_file: results.sarif