Examine source code of TetrioInput

{
  "manifest_version": 2,
  "name": "TetrioInput",
  "version": "1.0",
  "description": "A utility for enhancing mobile gameplay in Tetr.io with custom input keys.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{158f5086-2bf6-457c-9c51-fe88d2df65ae}"
    }
  }
}