Add Saber to CodeSandbox

[egoist]

Add Saber to this page (https://codesandbox.io/s/):

This is how VuePress got added there, it should be similar for Saber.

After that, we should also display the sandbox on saber.land, just like the homepage of Nuxtjs.org

[hkulur]

Hey! I would like to take this one!

[egoist]

@hkulur Hi, any progress? Do you need any help? 😄

[hkulur]

Hey @egoist, I have started work on it but it seems like they have made some changes to how they fetch templates after Vuepress was added. Templates are now a separate package. I ll try to finish it this week. Will let you know if I get stuck. Thanks!