init sbom action (#56177)

.github/workflows/sbom-report.yml

@@ -0,0 +1,20 @@
+name: syft-sbom-ci
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  syft-sbom:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+        
+    - name: Anchore SBOM Action
+      uses: anchore/sbom-action@v0.12.0
+      with:
+         artifact-name: ${{ github.event.repository.name }}-spdx.json
+