added update html workflow

.github/workflows/update-html.yaml

@@ -0,0 +1,51 @@
+name: update html tables
+
+# Controls when the action will run. Workflow runs when manually triggered using the UI
+# or API.
+on:
+  workflow_dispatch:
+
+  push:
+    paths:
+      - 'CORDEX-CMIP6_source_id.json'
+      - 'CORDEX-CMIP6_institution_id.json'
+    branches:
+      - main
+
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  update_html:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    - name: checkout cordex-cv
+      uses: actions/checkout@v4
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r scripts/requirements.txt
+
+    - name: Update html tables
+      run: |
+        cd scripts
+        pip install -e . --no-deps; cd ..
+        python scripts/create-html-datatables.py
+
+    - name: Check if there are any changes
+      id: verify_diff
+      run: |
+        git diff docs/ --quiet . || echo "changed=true" >> $GITHUB_OUTPUT
+
+    - name: Commit and push
+      if: steps.verify_diff.outputs.changed == 'true'
+      run: |
+        git config --local user.email "github-actions[bot]@users.noreply.github.com"
+        git config --local user.name "github-actions[bot]"
+        #(pre-commit run --all-files) || true
+        git commit docs/ -m "html update"
+        git status
+        git push