ci: add OSSGuard security review on PRs

Author: kirankotari

.github/workflows/ossguard.yml

@@ -0,0 +1,23 @@
+name: OSSGuard
+
+on:
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+  pull-requests: write
+  statuses: write
+
+jobs:
+  security-review:
+    name: Security Review
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: kirankotari/ossguard-app@main
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}