feat: add github workflow release notes yaml

Author: chachaxw

.github/workflows/release-notes.yaml

@@ -0,0 +1,21 @@
+name: Release-Notes-Preview
+
+on:
+  pull_request:
+    branches: [master]
+  issue_comment:
+    types: [edited]
+
+jobs:
+  preview:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: |
+          git fetch --prune --unshallow --tags
+      - uses: snyk/[email protected]
+        with:
+          releaseBranch: master
+        env:
+          GITHUB_PR_USERNAME: ${{ github.actor }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}