Add YAML linter workflow for validating YAML schema on pull requests

Author: dwydler

.github/workflows/tools_yaml_linter.yml

@@ -0,0 +1,30 @@
+---
+name: "Tools - Validate YAML Schema"
+
+"on":
+  pull_request:
+    branches:
+      - "customize"
+    paths:
+      - ".yamllint"
+      - "**.yaml"
+      - "**.yml"
+      - "**.yml.example"
+
+permissions:
+  contents: read
+
+jobs:
+  validate-yaml:
+    name: YAML Linter
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+
+      - name: Validate YAML files
+        run: yamllint .