devtools

Some prior art here:

https://github.com/puppeteer/examples/blob/master/verify_sw_caching.js
https://michaljanaszek.com/blog/test-website-performance-with-puppeteer/#cacheAndServiceWorker

I hope the official can add a new command to automatically generate RESTful API

(Came up during the work week) It's not clear to new users that you can rename a profile. Currently, this looks like:

For a low effort improvement, maybe we can add a pencil image (to say, "you can edit this!") to make it clearer? e.g.:

Untitled Profile

An improve to the layout of the devtool could definitely improve user experience. Lets make sure the devtool is utilizing the space better.

The text in the console is hard to read in dark mode. Notably:

• Info message & file
• Error file
• Message file