[IMP] Added the ability to unfold already present dependencies in tree

[alexandregaldeano]

Based on: #75

Added the --unfold-seen-addons options, which changes:

            a (13.0.1.0.0)
            ├── b (no version)
            │   └── mail (✘ not installed)
            └── c (no version)
                ├── account (13.0+c)
                └── b ⬆

To:

            a (13.0.1.0.0)
            ├── b (no version)
            │   └── mail (✘ not installed)
            └── c (no version)
                ├── account (13.0+c)
                └── b (no version)
                    └── mail (✘ not installed)

⚠️ There is a risk of infinite recursion in case of a cyclic dependency, let's discuss whether this case should be handled ⚠️