Add release with GH Actions. (#86)

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+name: sonar-release
+# This workflow is triggered when publishing a new github release
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  sonar_release:
+    runs-on: ubuntu-latest
+    name: Start release process
+    steps:
+      - name: Checkout release action
+        uses: actions/checkout@v2
+        with:
+          repository: SonarSource/gh-action_LT_release
+
+      - name: Scanner release
+        id: scanner_release
+        with:
+          distribute: true
+          attach_artifacts_to_github_release: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+        # Put your action repo here
+        uses: SonarSource/gh-action_LT_release@master
+
+      - name: Check outputs
+        if: always()
+        run: |
+          echo "${{ steps.scanner_release.outputs.releasability }}"
+          echo "${{ steps.scanner_release.outputs.release }}"