open modal github projects issue

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "open modal github projects issue",
  "manifest_version": 2,
  "version": "1.2.0",
  "description": "open modal github projects issue",
  "browser_action": {
    "default_title": "open modal github projects issue",
    "default_popup": "index.html"
  },
  "permissions": [
    "contextMenus"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*/projects/*"
      ],
      "css": [
        "lib/css/colorbox.css",
        "content_script.css"
      ],
      "js": [
        "lib/js/jquery-3.3.1.min.js",
        "lib/js/jquery.colorbox-min.js",
        "content_script.js"
      ],
      "run_at": "document_end"
    }
  ]
}