Examine source code of Burp Proxy

{
  "manifest_version": 3,
  "name": "Burp Proxy",
  "version": "1.2.6",
  "author": "Mr-Soldier",
  "description": "BurpSuit Proxy for hackers, Bug Hunters and Web Application Penetration Tested by Mr. Soldier. Please click on icon 3 times when freshly added extention after allowing to run in private windows",
  "permissions": [
    "proxy"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "icons": {
    "512": "icons/iconsburp-3-512.png"
  },
  "action": {
    "default_title": "Brup Proxy"
  },
  "developer": {
    "name": "Mr-Soldier"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mrsoldierofficial@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}