Improve information on cyclical dependencies

[kallisti5]

Whenever haikuporter runs into a cyclical dependency, it emits the following message as an example:

vim-9.1.1153, dependency autoconf_archive-2024.10.16 cannot be built: Error: Port autoconf_archive-2024.10.16 depends on itself
Warning: skipped port vim-9.1.1153-1: Error: Dependency of vim-9.1.1153 cannot be built

Additional hints in this message would be helpful to determine the looped dependency path.

[kallisti5]

As an example of a better message:

• vim-9.1.1153, dependency autoconf_archive-2024.10.16 cannot be built: Error: Port autoconf_archive-2024.10.16 depends on itself via xx,yy,zz