Show HN: Block distracting websites politely and lovingly

[sneas]

Hello, HN! The purpose of this extension is to:

* Block distracting a website with a blue screen when I open it mindlessly, akin to a drug addict. * Allow me to unblock the website when it is safe to browse. For example, when I'm waiting for a CI build to complete. * Block the website back after a certain timeout.