Add GitHub Action for automated link checking on PRs

.github/workflows/link-check.yml

@@ -0,0 +1,43 @@
+name: Link Checker
+
+# Trigger the workflow on pull requests to the main or develop branches
+on:
+  pull_request:
+    branches:
+      - main
+      - develop
+
+jobs:
+  link-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      # Step 1: Check out the repository code
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      # Step 2: Set up Node.js environment
+      - name: Set up Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '20.x'  # Adjust this to match your project's Node.js version
+
+      # Step 3: Install dependencies
+      - name: Install dependencies
+        run: npm install
+
+      # Step 4: Build the site and serve it on a dynamic port
+      - name: Build and serve the site
+        run: npm start
+
+      # Step 5: Run the link checker
+      - name: Run link checker
+        run: npm run link-check
+
+      # Step 6: Upload broken links report if broken links are found
+      - name: Upload broken links report
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: broken-links-report
+          path: broken-links.json