disable schemaStore in VSCode YAML ext

Some schemas are used where they shouldn't be (.github/workflows/mkdocs.yml).
Some schemas are just outdated or incorrect (.github/labeler.yml).

Prefer using GitHub Actions ext in VSCode to validate workflows

Author: 2bndy5

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "github.vscode-github-actions"
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "yaml.schemaStore.enable": false
+}