ci: add a pylint badge

Signed-off-by: Davide Madrisan <[email protected]>

.github/workflows/ci.yaml

@@ -20,7 +20,7 @@ jobs:
           version: "latest"
 
       - name: Install Python dependencies
-        run: pip install black flake8 pylint
+        run: pip install anybadge black flake8 pylint
 
       - name: Run linters
         uses: wearerequired/lint-action@v2
@@ -31,4 +31,7 @@ jobs:
 
       - name: Analysing the code with pylint
         run: |
-          uv run pylint $(git ls-files '*.py')
+          uv run pylint --output-format=text ./**/*.py | tee pylint.txt
+          score="$(sed -n "/^Your code has been rated at/{s,.* at \([0-9\.]*\)\/.*,\1,p}" pylint.txt)"
+          uv run anybadge --label pylint --value "$score" --file="pylint.svg" --overwrite
+