qmk_firmware/keyboards/handwired/splittest/info.json

{
    "keyboard_name": "Split Tester",
    "url": "",
    "maintainer": "nooges",
    "width": 2,
    "height": 1,
    "layouts": {
        "LAYOUT": {
            "layout": [
                {"x": 0,"y": 0},
                {"x": 1,"y": 0}
            ]
        }
    }
}