use resolved objects for Blob and Tree

[alexandresalome]

Upcoming features:

• Submodules (URL + commit hash) - A submodule in a directory causes the entire directory to not be "blob get contents" able. #12
• $blob->getName();
• $blob->getPath();
• $tree->getName();
• $tree->getPath();

[Potherca]

👍

[GrahamCampbell]

What's the status here please?

[keradus]

I would say 3 years old PR prove it's not needed