Add option to wrap lines in browser

[ghost]

It's easier to view pastes with super long lines when viewing the raw paste right now.

https://brpaste.xyz/adCuBQ/raw vs https://brpaste.xyz/adCuBQ

[CosmicToast]

Looks like all that's needed is this CSS rule:

pre[class*="language-"] code[class*="language-"] {
    white-space: pre-wrap;
}

just have to decide if it should be the default (I'm leaning yes, but give it a minute or two 🙂)