add validate github workflow

.github/workflows/validate.yaml

@@ -0,0 +1,17 @@
+name: Validate NFC Files
+
+on:
+  push:
+  pull_request:
+    types: [ opened, synchronize, reopened ]
+
+jobs:
+  validation:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: validate
+        run: ./validation.sh