gitignore: Ignore ninja files
gitignore: Ignore ninja files

waffle-gl/waffle,maurossi/waffle,dcbaker/waffle,yinquan529/waffle-gl-waffle,waffle-gl/waffle,evelikov/waffle,maurossi/waffle,chadversary/waffle,dcbaker/waffle,janesma/waffle,fjhenigman/waffle,yinquan529/waffle-gl-waffle,chadversary/waffle,evelikov/waffle,maurossi/waffle,chadversary/waffle,fjhenigman/waffle,waffle-gl/waffle,yinquan529/waffle-gl-waffle,dcbaker/waffle,janesma/waffle,evelikov/waffle,fjhenigman/waffle,waffle-gl/waffle,janesma/waffle