Examine source code of Redwax SignText Extension

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "__MSG_extension_name__",
  "description": "__MSG_extension_description__",
  "version": "0.9.5",
  "icons": {
    "48": "images/icon-48.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png",
    "512": "images/icon-512.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "nativeMessaging"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "rst@redwax.eu",
      "strict_min_version": "109.0"
    }
  }
}