Add json style check workflow (#33415)

.github/workflows/json.yml

@@ -0,0 +1,25 @@
+name: JSON Validation
+
+on:
+  push:
+    branches:
+    - master
+    paths:
+    - "*.json"
+  pull_request:
+    branches:
+    - master
+    paths:
+    - "*.json"
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 10
+    - name: JSON style check
+      run: make style-json