Feature request: tree-like dependency view in `--dry-run` and `--dry-run-short`

[ypczuchr]

It would be great if EasyBuild could show dependencies (with --dry-run and --dry-run-short) as a tree like Spack does in spack spec:

Flat lists are good, but the dependency graph can be overwhelming with a large number of dependencies. The tree view will be a great enhancement.