Examine source code of Canvas Modulebar

{
  "manifest_version": 3,
  "name": "Canvas Modulebar",
  "version": "2.2",
  "description": "Keep Your Modules Visible on Canvas!",
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "canvas-modulebar@kasper.rook",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "128": "images/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/courses/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "tutorial.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "author": "Kasper"
}