check json files with jq

.github/workflows/lint.yml

@@ -0,0 +1,24 @@
+---
+name: Lint
+
+on:
+  pull_request:
+    paths:
+      - "secjson/**/**"
+
+jobs:
+  build:
+    name: JSON lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+      - name: Check JSON files
+        run: |
+          for f in $(ls secjson); do
+            jq type 1>/dev/null < "$f"
+            if [ $? -gt 0 ]; then
+              echo "Error in file: $f"
+            fi
+          done