Added GH Action for checking if .json files are valid

.github/workflows/json-schema.yml

@@ -0,0 +1,31 @@
+name: JSON Schema Check
+
+on:
+  pull_request:
+    branches: [ "main" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  validate_json:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install jsonschema
+
+    - name: Run JSON validation
+      run: |
+        python ./utility/validate_json.py