feat(cicd): add hyperlink checker

templates/validation.yml

@@ -56,3 +56,11 @@ gitlab-ci-lint:
   rules:
     # enabled if $GITLAB_TOKEN and GITLAB_CI_FILES are set
     - if: '$GITLAB_TOKEN && $GITLAB_CI_FILES'
+
+check-links:
+  image: 
+    name: lycheeverse/lychee:latest
+    entrypoint: [""]
+  stage: build
+  script:
+    - lychee --exclude-path CHANGELOG.md *.md