Add xcode_summary to Danger to show build errors

[SD10]

One thing I hate about CI failing is I have to go and dig through the build log. It would be great if we could use xcode_summary to propagate test failures and build errors.

Here is an example of it being used at the EZSwiftExtensions repo

[BasThomas]

Oh wow, why have I not heard of this before?!

[SD10]

@LucianoPAlmeida I'm tagging you because I see you setting this up for SwifterSwift/SwifterSwift#498. If you get it working would you be so kind as to see if it can be applied to Moya too? ❤️

[LucianoPAlmeida]

For sure @SD10 :))
I just start running some tests to see how it works, let's see if I can put this to run there 😆

[LucianoPAlmeida]

I think I can try to make this one on this weekend :))
Let's see if we can make this run 😊

[SD10]

This was resolve in #1680. Awesome work!