Add Inconsolata-dz

This is the Inconsolata font with, dz variation (with straight quotes), without the powerline additions.

I've found a need for this as well as [`Inconsolata-dz for Powerline`](https://github.com/caskroom/homebrew-fonts/blob/master/Casks/font-inconsolata-dz-for-powerline.rb) as I've had a few situations in which `Inconsolata-dz for Powerline` did not work correctly.