Add lockfile changes action (#818)

.github/workflows/lockfile.yml

@@ -0,0 +1,26 @@
+name: NPM Lockfile Changes
+
+on:
+  pull_request:
+    paths:
+      - 'package-lock.json'
+
+jobs:
+  lockfile_changes:
+    runs-on: ubuntu-latest
+    # Permission overwrite is required for Dependabot PRs, see "Common issues" below.
+    permissions:
+      contents: read
+      pull-requests: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3.0.2
+      - name: NPM Lockfile Changes
+        uses: codepunkt/npm-lockfile-changes@b40543471c36394409466fdb277a73a0856d7891
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          # Optional inputs, can be deleted safely if you are happy with default values.
+          collapsibleThreshold: 25
+          failOnDowngrade: false
+          path: package-lock.json
+          updateComment: true