chore: add biome for lint and format CSS and JS

[ar4s]

• fix errors
• add job to CI
• update README.md

[nfoert]

Thanks for implementing this @ar4s! I was just playing around with it and it seems to be very performant.
You said in #73 that you were having trouble with a lot of errors, I think this should wait to get merged until all of the .js files can be checked with biome
Would it be helpful if I worked on fixing some of the JavaScript files?

[ar4s]

Would it be helpful if I worked on fixing some of the JavaScript files?

Sure :) you know better the project and features and biome's errors are convinient and readable. You can grab editor and I take care of the smallest ones :)

[nfoert]

You can grab editor and I take care of the smallest ones :)

Okay, will do!

[nfoert]

I set noVar to off because it was wanting any globaly declared variable to be changed to let or const, however, global variables are required in several places in this project

[nfoert]

@ar4s, I also set to ignore any *.min.js files so these can stay minified, in case later we're allowing many more directories of scripts to be linted and formatted