Add post-compare-link action (#162)

.github/workflows/post-compare-link.yaml

@@ -0,0 +1,18 @@
+name: Post compare link when flake.lock changes
+
+permissions:
+  issues: write
+  pull-requests: write
+
+on:
+  pull_request:
+    paths: ['flake.lock']
+
+jobs:
+  post-compare-link:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: NuschtOS/flake-lock-compare-action@main