Examine source code of Refined Saved Replies

{
  "browser_specific_settings": {
    "gecko": {
      "id": "refined-saved-replies@joshuakgoldberg.com"
    }
  },
  "content_scripts": [
    {
      "js": [
        "lib/content-script.js"
      ],
      "matches": [
        "https://github.com/*/*/issues/*",
        "https://github.com/*/*/pull/*"
      ]
    }
  ],
  "description": "Adds a repository's .github/replies.yml to GitHub's Saved Replies feature.",
  "icons": {
    "16": "assets/icon16.png",
    "32": "assets/icon32.png",
    "48": "assets/icon48.png",
    "64": "assets/icon64.png",
    "128": "assets/icon128.png"
  },
  "manifest_version": 3,
  "name": "Refined Saved Replies",
  "version": "0.5"
}