firmware/.vscode/extensions.json

{
    // See http://go.microsoft.com/fwlink/?LinkId=827846
    // for the documentation about the extensions.json format
    "recommendations": [
        "platformio.platformio-ide",
        "xaver.clang-format"
    ],
    "unwantedRecommendations": [
        "ms-vscode.cpptools-extension-pack"
    ]
}