Examine source code of Quick Element Remover

{
  "manifest_version": 3,
  "name": "Quick Element Remover",
  "version": "1.4",
  "description": "Removes items with one click",
  "icons": {
    "48": "icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{06833ffb-94b5-46ac-97a3-aed2579d0429}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "action": {
    "default_icon": "icon.svg",
    "default_title": "Delete item (Alt+Shift+X)"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "toggle-remove-mode": {
      "suggested_key": {
        "default": "Alt+Shift+X"
      },
      "description": "Enable/Disable Delete Mode"
    }
  }
}