This PR drastically improves the documentation by improving the sidebars and adding a GitHub icon. Fixed: https://github.com/puppeteer/puppeteer/pull/9176 Fixed: https://github.com/puppeteer/puppeteer/issues/9173 
This PR updates the docs regarding configuring puppeteer. In addition, some changes have been made to the documentation generator to show default values on the documentation site. Also fixes: https://github.com/puppeteer/puppeteer/pull/9144
utils
This PR - renames the `utils` folder to `tools` (follows internal practice), - migrates the contents of `scripts` into `tools` and removes scripts.