Add workflow yml validation settings

- Add yml validation to project for vscode
- Allow .vscode/settings.json
- Apply formatting to workflow files

.vscode/settings.json

@@ -0,0 +1,12 @@
+{
+    "python.formatting.provider": "black",
+    "cSpell.words": [
+        "Dupras",
+        "hscommon"
+    ],
+    "python.languageServer": "Pylance",
+    "yaml.schemaStore.enable": true,
+    "yaml.schemas": {
+        "https://json.schemastore.org/github-workflow.json": ".github/workflows/*.yml"
+    }
+}