Browser extension for a faster Brat annotation mode.

Ali 6626e1aef3 Adding dark mode %!s(int64=3) %!d(string=hai) anos
bratFastMode.css 6626e1aef3 Adding dark mode %!s(int64=3) %!d(string=hai) anos
bratFastMode.js 6626e1aef3 Adding dark mode %!s(int64=3) %!d(string=hai) anos
manifest.json 9cc632901e initial release %!s(int64=3) %!d(string=hai) anos