Create a weekly 404 checker for all Consul docs content (#16603)

.github/workflows/broken-link-check.yml

@@ -0,0 +1,30 @@
+name: Broken Link Check
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * 1"
+
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Run lychee link checker
+        id: lychee
+        uses: lycheeverse/lychee-action@v1.6.1
+        with:
+          args: ./docs --base https://developer.hashicorp.com/ --exclude-all-private --exclude .png --exclude .svg --max-concurrency=24 --no-progress --verbose
+          # Fail GitHub action when broken links are found?
+          fail: false
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
+      - name: Create GitHub Issue From lychee output file
+        if: env.lychee_exit_code != 0
+        uses: peter-evans/create-issue-from-file@v4
+        with:
+          title: Link Checker Report
+          content-filepath: ./lychee/out.md
+          labels: report, automated issue