Ignore VCS ignored files

[alerque]

I found that Stylua honors a .styluaignore file, but it would be much more useful to my projects if it would just ignore everything in .gitignore. Ruff and some other formatters do this and it makes it easy to avoid modifying vendored or generated code.

[JohnnyMorganz]

I don't remember why we didn't decide to ignore these files in the first place, but sounds reasonable to me.
For some reason we disabled ignoring at

StyLua/src/cli/main.rs

Line 316 in 5de9a1d

.standard_filters(false)