feat: add tree view in Paths filter

[Soliine]

Context: In Path filter, we have a list view. Users would like to switch to another view (tree view) in which they enter a folder to see and open its subfolders. It would be particularly useful in case of a lot of nested subfodlers.

Request:

• [ ] Create a breadcrumb
• [ ] Add a switch button on the left of the sorting icon:

List view when active: Name of the Phosphor icon: ListBullets

Tree view when active: Name of the Phosphor icon: TreeView

Note: in the future 'Path' tab in Projects > LuxLeaks, it means we will have a third radiobutton:

[pirhoo]

Change hover cursor and color to match links.