Aggiunta validazione con Ruff nelle GitHub Actions

Verifica che il codice sia conforme alla formattazione con Ruff nelle PR o manualmente.

.github/workflows/validate.yaml

@@ -7,19 +7,20 @@ on:
   pull_request_target:
     branches:
       - master
+  workflow_dispatch:
 
 jobs:
-#  validate-ruff:
-#    name: With Ruff
-#    runs-on: ubuntu-latest
-#    steps:
-#      - name: Check out repository
-#        uses: actions/checkout@v4
-#
-#      - name: Check ruff
-#        uses: chartboost/ruff-action@v1
-#        with:
-#          args: 'format --diff'
+  validate-ruff:
+    name: Validate with ruff
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Check ruff
+        uses: astral-sh/ruff-action@v3
+        with:
+          args: 'format --diff'
 
   validate-hassfest:
     name: Validate with hassfest