manifest.json

{
    "manifest_version": 3,
    "name": "New Tab to the Right",
    "description": "Opens a new tab to the right of the current tab.",
    "version": "1.0",
    "icons": {
        "128": "128.png"
    },
    "background": {
        "service_worker": "background.js"
    },
    "commands": {
        "open-new-tab": {
            "suggested_key": {
                "default": "Alt+T"
            },
            "description": "Opens a new tab to the right"
        },
        "move-tab-left": {
            "suggested_key": {
                "default": "Alt+Comma"
            },
            "description": "Moves the current tab to the left"
        },
        "move-tab-right": {
            "suggested_key": {
                "default": "Alt+Period"
            },
            "description": "Moves the current tab to the right"
        }
    },
    "permissions": [
        "tabs"
    ]
}