Relative path is wrong when referencing file outside of project folder

[damirdavletov]

What 🌱

When referencing file higher in folder hierarchy than sourceRoot relative path is calculated incorrectly. e.g. if you have the structure like this:

/root/Project1/Project1.xcodeproj
/root/Project2/Project2.xcodeproj

And then add Project2 reference to Project1 then the path is calculated incorrectly as /root/Project2/Project2.xcodeproj while it should be ../Project2/Project2.xcodeproj

Proposal 🎉

Attaching the proposed fix