chore(git): ignore yarn using whitelist

[dargmuesli]

Use content as given by https://www.gitignore.io/api/yarn.

Just an idea, you could use https://www.gitignore.io/ to generate the full file as well. I use the following query for example: https://www.toptal.com/developers/gitignore/api/node,linux,macos,nuxtjs,windows

Feel free to close this PR if you'd like to keep everything as is or change the whole file. Whatever fits 😉

[adenvt]

I'm mostly use .gitignore format from this, but look like i was forgot to change on this repo.

Do you mind to change it like that?

[dargmuesli]

I see. It seems that the github/gitignore template does not support Nuxt 3 yet while gitignore.io does (I'm looking for .output for example).