Tell GitHub to allow JSON files with comments

.vscode/.gitattributes

@@ -0,0 +1 @@
+*.json  linguist-language=JSON-with-Comments

.vscode/extensions.json

@@ -1,12 +1,10 @@
 {
     // See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
     // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
-
     // List of extensions which should be recommended for users of this workspace.
     "recommendations": [
         "github.vscode-codeql"
     ],
     // List of extensions recommended by VS Code that should not be recommended for users of this workspace.
-    "unwantedRecommendations": [
-    ]
+    "unwantedRecommendations": []
 }