#2638 add new linkcheck workflow

.github/workflows/linkcheck.yml

@@ -0,0 +1,16 @@
+name: Linkspector
+on: [pull_request]
+jobs:
+  check-links:
+    if: ${{ github.repository != 'stfc/PSyclone-mirror' }}
+    name: runner / linkspector
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run linkspector
+        uses: umbrelladocs/action-linkspector@v1
+        with:
+          github_token: ${{ secrets.github_token }}
+          reporter: github-pr-review
+          fail_on_error: true
+          config_file: '.github/workflows/linkspector.yml'

.github/workflows/linkspector.yml

@@ -0,0 +1,13 @@
+dirs:
+  - .
+useGitIgnore: true
+ignorePatterns:
+  - pattern: '^https://mybinder.org/v2/gh/stfc/psyclone'
+replacementPatterns:
+  - pattern: '^https:\/\/(psyclone.*\.readthedocs\.io\/en\/)stable$'
+    replacement: 'https://$1/latest'
+aliveStatusCodes:
+  - 200
+  - 401
+  - 502
+  - 503