ci(broken link checker): add cron job to check broken link

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

@@ -0,0 +1,24 @@
+name: Broken link checker
+
+on:
+  schedule:
+    - cron: '0 5 * * 1-5'
+  workflow_dispatch:
+    inputs:
+      {
+        url:
+          {
+            description: 'URL to check (default: https://suspensive.org)',
+            required: false,
+            default: 'https://suspensive.org',
+          },
+      }
+
+jobs:
+  cron:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./.github/actions/pnpm-setup-node
+      - run: pnpm install --frozen-lockfile
+      - run: pnpx bloken-link-checker ${{ github.event.inputs.url }}