Introduce Link checker action into pipeline (#206)

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

@@ -0,0 +1,25 @@
+name: Links checker
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Link Checker
+        uses: lycheeverse/[email protected]
+        with:
+          # All supported file formats to be verified and accept 403 (Forbidden) as correct link
+          args: --verbose -a 200,202,403 './**/*.md' './**/*.html' './**/*.rst' --exclude '^https:\/\/cp'
+          format: markdown
+          # Add job summary in github action
+          jobSummary: true
+          # Fail job if one or more links are failing
+          fail: true
+
+
+