feat: use uv.lock deps for the dep graph instead

[aignas]

Summary:

• Thread deps from uv.lock file into the hub_repository
• Use them to define the dep graph
• Alter the pkg_aliases and render_pkg_aliases to be able
  to use the dep graph information if it is provided.

TODO:

• Split the whl_library_targets into separate files, I think they
  have stabilized enough.
• Have a separate PR just for threading the dependencies to
  render_pkg_aliases. We probably need to handle various edge-cases
  where we have different package versions in the uv.lock file.
• Have a separate PR to enable usage of the dependency graph. This
  is now probably doing a few shortcuts.
• If we have uv.lock, define fewer wheel repos - only define the
  sources without passing the dep_template in there.
• Test coverage for the above.

Creating the PR for discussion mainly. I am not sure when I'll get to do any of
the above, so if someone would like to start doing this along the similar lines
on how this PR has been designed, please feel free to take any part here.