Add SBOM (Software Bill of Materials) for the EU Cyber Resilience Act (EU CRA) (#15732)

* Update flutter-build.yml to generate SBOM

* SBOM Generation: Also checkout submodules

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

.github/workflows/flutter-build.yml

@@ -53,6 +53,34 @@ env:
   SIGN_BASE_URL: "${{ secrets.SIGN_BASE_URL }}-2"
 
 jobs:
+  generate-sbom:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+        with:
+          submodules: recursive
+
+      - name: Install Syft
+        uses: anchore/sbom-action/download-syft@v0
+
+      - name: Generate SBOM
+        run: |
+          syft dir:. \
+            -o cyclonedx-json=rustdesk.sbom.json
+
+      - name: Publish Release
+        uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844 # v1
+        if: env.UPLOAD_ARTIFACT == 'true'
+        with:
+          prerelease: true
+          tag_name: ${{ env.TAG_NAME }}
+          files: |
+            rustdesk.sbom.json
+
   generate-bridge:
     uses: ./.github/workflows/bridge.yml