kit@110: removed lines from .gitignore in demo project

[frederikhors]

Describe the bug
From 1.0.0-next.110 in .gitignore of demo project are removed lines:

/build
/functions

and is added /package.

Is this a mistake?

WE still need /build in .gitignore, right?

[benmccann]

Yeah, I'd tend to agree. Though we may want to handle this on a per-adapter basis. See #1436 (comment) for more discussion

[jthegedus]

we may want to handle this on a per-adapter basis

I would like to voice again that Adapter specific ignore entries should be handled by the adapter or their instructions, not the default Kit template. /functions in the template may be useful for the Netlify adapter users with default dirs, but disadvantages those with non-default Netlify config, and more importantly other completely unrelated adapter users.