Add github action to format yaml files

Signed-off-by: hansinikarunarathne <107214435+hansinikarunarathne@users.noreply.github.com>

.github/workflows/python_formatter.yaml

@@ -7,5 +7,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
       - uses: psf/black@stable
 

.github/workflows/yaml_formatter.yaml

@@ -0,0 +1,15 @@
+name: Proper Formatting on Yaml files
+
+on: [push, pull_request]
+
+jobs:
+  format_python_files:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Install yamllint
+      run: pip install yamllint
+
+    - name: Lint YAML files
+      run: yamllint .

.yamllint.yaml

@@ -0,0 +1,12 @@
+# It extends the default conf by adjusting some options.
+extends: default
+
+rules:
+  document-start:
+    present: false
+  document-end:
+    present: false
+  indentation:
+    indent-sequences: false
+  line-length:
+    max: 400