Renaming repository from `vinci` to `vizor` - first phase

Signed-off-by: Soumya Deb <debloper@gmail.com>
Renaming repository from `vinci` to `vizor` - second phase

Signed-off-by: Soumya Deb <debloper@gmail.com>
Single traversal of data for both depth & breadth stats
- Extends the object-recursion with level-info
- Counts siblings & cousins per level

Signed-off-by: Soumya Deb <debloper@gmail.com>