Feature: Allow dotfiles to target root

[RaphGL]

While stow allows changing where to deploy dotfiles via flags tuckr does not, this makes so that one still needs stow to be installed on the system despite tuckr being as capable as it to track and manage dotfiles.

Root targeting should be implemented and allow users to manage global configuration from their home if they so wish.
Note: This has to take into account that when run as sudo the home path becomes the root's

Possible idiom for targeting root:

├── root
│   └── tuckrfiles
│       └── usr
│           └── local
│               └── etc
└── tuckrfiles

[RaphGL]

When targetting root, an easy way to mark a group as "root targeting" is by provide a sigil

@ seems to be a decent sigil option not used by any of the major shells
So groups that are targeting root could be used like so:

$ tuckr status
                                        
     ╭────────────┬───────────────╮     
     │ Symlinked  │ Not Symlinked │     
     ├────────────┼───────────────┤     
     │ alacritty  │ @pacman       │     
     │ bash       │               │     
     │ bspwm      │               │     
     │ zathura    │               │
     │ zsh        │               │     
     ╰────────────┴───────────────╯   

when using @ one has to be in running as root, tuckr knows that you're running as root by using system calls to know which user called sudo

$ sudo tuckr add @pacman

Globbing should ignore root targeting groups.
If root groups are used without root permissions an error should be emitted.