Workspace: improve git submodule

[q231950]

Minor: We can rename it to be simply paper. It might make some git output easier to read.

Originally posted by @molikuner in #1 (comment)

[q231950]

@molikuner do you want to elaborate on this? I'm not sure what exactly you meant to improve here. Thank you 🙏

[molikuner]

It was thinking we could potentially rename the submodule to paper instead using Packages/shared/paper. It doesn't really impact functionality and most probably isn't worth the effort, as we just have one single submodule. Feel free to close the issue 😄