Adding --no-color flag to stylelint args

[stevematney]

At least some editors don't work on linting because of colors in the stylelint output. This should resolve that.

[rymdbar]

Its always great to see bugfix pull-requests!

However, tools should not require such flags when operating on stdin/stdout. That really ought to be a channel without CSI commands. Where is the bug report towards stylelint? Could you please report and attempt getting the problem fixed at the source first, before allowing their issue to cascade into unrelated pieces of software?

In case the stylelint team are unable or unwilling to fix their issue, I guess one could probably add this workaround to ale. Before doing so, one must consider that this fixer integration presumably once worked and that backwards compability is a goal here. If flags are added in later versions, the ale#semver#RunWithVersionCheck helper method is typically used to keep setups working for users who might be stuck on older versions.

A quick look shows that --no-color became documented in stylelint/stylelint#1479, but really belongs to some chalk dependency. How that stuff works requires a bit of effort to figure out though, as the cheeseshop 404:s.

[hsanson]

Thanks for the contribution.