[CONFIG] [Github Actions] new tool added: yamllint

Author: Gonzalo Diaz

.github/workflows/yamllint.yml

@@ -0,0 +1,16 @@
+---
+name: YAML lint
+
+on: push # yamllint disable-line rule:truthy
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install yamllint
+        run: pip install yamllint
+
+      - name: Lint YAML files
+        run: yamllint .